MICREL MIC5374

MIC5374/84
Triple 200mA µCap LDO and 1mA
RTC LDO in 2.5mm x 2.5mm Thin MLF®
General Description
Features
The MIC5374/84 is a four output device with three 200mA
LDOs and a Real Time Clock (RTC) 1mA LDO which is
ideal for application processor support in mobile platforms.
The MIC5374 provides independent control active high
enables for each of the 200mA LDOs with an additional
always-on RTC LDO. The MIC5384 provides active low
enables. Both the MIC5374 and MIC5384 are available in
the tiny 2.5mm x 2.5mm Thin MLF® package.
The MIC5374/84 is designed for high input ripple rejection
(high PSRR) and provides low output noise making it ideal
for powering sensitive RF circuitry such as GPS, WiFi and
Bluetooth applications. The MIC5374/84 also incorporates
a power-on-reset (POR) supervisor with adjustable delay
time set by an external capacitor, and an independent
input pin to monitor any voltage level. Once high the POR
output can be asserted low again by enabling the manual
reset (MR) pin. When the MR pin is restored low the POR
output will re-time the delay set by the external delay
capacitor.
The MIC5374/84 operates with very small ceramic output
capacitors to reduce board space and component cost. It
is available in various fixed output voltages. The
MIC5374/84 has a junction temperature range from -40°C
to 125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
•
•
•
•
•
•
•
•
•
•
•
1.7V to 5.5V input supply voltage range
Output current - 200mA LDO1/2/3, 1mA LDO4
LDO4 – Ultra low 8µA IBIAS for RTC support
High output accuracy (±2%)
Independent enable pins
POR with user-defined voltage monitoring
- POR voltage input
- Adjustable delay time
- Manual reset pin
Low dropout voltage – 170mV at 150mA
High PSRR - 55dB at 1kHz on each LDO
Stable with tiny ceramic output capacitors
2.5mm x 2.5mm Thin MLF® 16-pin package
Thermal shutdown and current limit protection
Applications
•
•
•
•
Mobile phones
GPS receivers
Application co-processors
PDAs and handheld devices
Typical Application
MIC5384
MIC5374
BIAS
OUT1
0.1µF
OUT2
1µF
INLDO3
OUT3
INLDO4
OUT4
1µF
EN1
EN2
EN3
MR
100k
10k
INLDO3
OUT3
INLDO4
OUT4
1µF
1µF
1µF
VBIAS
1µF
1µF
EN1
POR
POR_IN
OUT2
1µF
1µF
1µF
INLDO1/ 2
1µF
1µF
1µF
OUT1
0.1µF
1µF
INLDO1/ 2
BIAS
10k
EN2
VMONITOR
EN3
10k
MR
DLY
GND
150pF
100k
10k
POR
POR_IN
10k
VBIAS
VMONITOR
10k
DLY
GND
150pF
Typical MIC5374-xxxxYMT Circuit
Typical MIC5384-xxxxYMT Circuit
(Active High Enable)
(Active Low Enable)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2010
M9999-070110
Micrel, Inc.
MIC5374/84
Ordering Information
Part Number
Mark
Code
Output Voltage(1)
Junction Temp.
Range
Package
MIC5374-SJG1YMT
SJG1
3.3V/2.5V/1.8V/1.0V
–40° to +125°C
16-Pin 2.5mm x 2.5mm Thin MLF®
Pb-free
–40° to +125°C
®
Pb-free
MIC5384-MG44YMT
Z1U
2.8V/1.8V/1.2/1.2V
Lead
(2)
Finish
16-Pin 2.5mm x 2.5mm Thin MLF
Note:
1.
Other voltage options available. Contact Micrel for details.
2.
Lead finish is NiPdAu. Mold compound material is halogen free.
Pin Configuration
MIC5374
®
16-Pin 2.5mm x 2.5mm Thin MLF (MT)
(Top View)
July 2010
MIC5384
®
16-Pin 2.5mm x 2.5mm Thin MLF (MT)
(Top View)
2
M9999-070110
Micrel, Inc.
MIC5374/84
Pin Description
Pin Number
Pin Name
1
OUT1
Pin Function
2
INLDO1/2
3
OUT2
Regulator Output – LDO2.
4
BIAS
Internal Bias Supply Voltage. Must be de-coupled to ground with a 0.1µF capacitor.
5
POR_IN
6
POR
Power-on Reset Output. Open drain.
7
DLY
POR Delay Capacitor. Connect capacitor to ground to set POR delay time.
8
MR
Manual Reset Input. Manually resets output of POR and delay generator. Do not leave floating.
Regulator Output - LDO1.
Supply Input (LDO1/2).
Input to POR. Connect directly to output voltage or input voltage that is to be monitored for a 0.9V
reference, or connect a resistor divider network to this pin to program the POR monitoring voltage.
9
OUT4
10
INLDO4
Supply Input (LDO4). Ultra-low IQ RTC LDO. 1.7V to 5.5V input voltage range.
11
INLDO3
Supply Input (LDO3).
12
OUT3
Regulator Output – LDO3.
13
GND
Ground.
14
EN3 or
/EN3
15
EN2 or
/EN2
/EN (MIC5384): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
16
EN1 or
/EN1
/EN (MIC5384): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
HS Pad
EPAD
July 2010
Regulator Output - LDO4.
LDO3 Enable Input. EN (MIC5374): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5384): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO2 Enable Input. EN (MIC5374): Active High Input. Logic High = On; Logic Low = Off;
LDO1 Enable Input. EN (MIC5374): Active High Input. Logic High = On; Logic Low = Off;
Exposed Heat Sink Pad. Connect to GND.
3
M9999-070110
Micrel, Inc.
MIC5374/84
Absolute Maximum Ratings(1)
Operating Ratings(4)
Supply Voltage (VINLDO1/2, INLDO3, INLDO4) ............. -0.3V to +6V
Bias Supply Voltage (VBIAS).............................. -0.3V to +6V
Enable Input Voltage (VEN1, EN2, EN3).................. -0.3V to +6V
POR Output Voltage (POR) ............................. -0.3V to +6V
POR Input Voltage (POR_IN) .......................... -0.3V to +6V
MR Voltage (MR) ............................................. -0.3V to +6V
DLY Voltage (DLY)........................................... -0.3V to +6V
Power Dissipation .................................. Internally Limited(2)
Lead Temperature (soldering, 10 sec)....................... 260°C
Storage Temperature (Ts) .........................–60°C to +150°C
ESD Rating(3) ................................................. ESD Sensitive
Supply Voltage(5) (VINLDO1/2, INLDO3, INLDO4) ........ +1.7V to VBIAS
Bias Supply Voltage (VBIAS).......................... +2.5V to +5.5V
Enable Input Voltage (VEN1, EN2, EN3)..................... 0V to VBIAS
POR Output Voltage (POR) .............................. 0V to +5.5V
POR Input Voltage (POR_IN) ............................. 0V to VBIAS
MR Voltage (MR) ................................................ 0V to VBIAS
DLY Voltage (DLY).............................................. 0V to VBIAS
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
2.5 x 2.5 Thin MLF®-16L (θJA)..........................100°C/W
Electrical Characteristics(6)
(MIC5374) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = VEN1 = VEN2 = VEN3 = 5.5V (ON);
(MIC5384) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = 5.5V; V/EN1 = V/EN2 = V/EN3 = GND (ON);
IOUT1 = IOUT2 = IOUT3 = IOUT4 = 100µA; COUT1 = COUT2 = COUT3 = COUT4 =1µF; TA = 25°C, Bold values indicate –40°C ≤ TJ ≤
+125°C, unless noted.
Parameter
Conditions
Min
Output Voltage Accuracy
(LDO1/2/3)
Variation from nominal VOUT1, 2, 3
-2.0
Variation from nominal VOUT1, 2, 3
-3.0
+3.0
%
Output Voltage Accuracy
(LDO4 - RTC Support)
Variation from nominal VOUT4
-4.0
+4.0
%
Variation from nominal VOUT4
-5.0
+5.0
%
Line Regulation
VIN = VOUT +1V to 5.5V; IOUT = 100µA
0.02
0.3
%/V
IOUT = 100µA to 150mA; LDO1/2/3
0.3
1
%
IOUT = 100µA to 1mA; LDO4
0.05
1
%
IOUT = 50mA; VOUT ≥ 2.8V
60
115
mV
IOUT = 150mA; VOUT ≥ 2.8V
170
330
mV
IOUT = 50mA; VOUT < 2.8V
85
145
mV
IOUT = 150mA; VOUT < 2.8V
275
450
mV
EN1 or EN2 or EN3 = ON; Not including IBIAS
10
20
µA
Load Regulation
Dropout Voltage
Input Ground Current
Typ
Max
Units
+2.0
%
LDO4; EN1 = EN2 = EN3 = OFF; Not including IBIAS
3
8
µA
EN1 or EN2 or EN3 = ON; with LDO4 ON
42
70
µA
EN1 = EN2 = EN3 = ON; with LDO4 ON
106
170
µA
Shutdown Input Ground Current
EN1 = EN2 = EN3 = OFF
0.04
2
µA
Shutdown Bias Current
EN1 = EN2 = EN3 = OFF; with LDO4 ON
8
13
µA
Input Bias Current
Ripple Rejection
Current Limit
Output Voltage Noise
July 2010
f = 1kHz; COUT = 1.0µF;
55
VOUT = 0V; LDO1/2/3
VOUT = 0V; LDO4
COUT =1µF,10Hz to 100kHz; IOUT = 150mA
4
dB
200
350
700
mA
2
12
50
mA
200
µVRMS
M9999-070110
Micrel, Inc.
MIC5374/84
Electrical Characteristics (Continued)
Parameter
Enable Input Voltage
Enable Input Current
Conditions
Min
Typ
(MIC5374) LDO OFF; (MIC5384) LDO ON;
(MIC5374) LDO ON; (MIC5384) LDO OFF;
VIH > 1.2V
0.01
Turn-on Time
COUT = 1µF
80
VPOR
POR Output Low Voltage
DLY Pin Current Source
VDLY = 0V
POR Output Leakage Current, VPOR OFF
VTH
POR Under Voltage Threshold
VHYS
POR Voltage Threshold Hysteresis
IPOR_IN
POR Input Pin Leakage Current
V
V
0.01
IPOR
Units
0.2
1.2
VIL < 0.2V
DLY Pin Voltage Threshold
Max
µA
µA
200
µs
0.2
V
0.75
1.25
2
µA
1.13
1.25
1.38
1
0.873
0.9
V
µA
0.927
V
34
mV
1
µA
Thermal Shutdown
155
°C
Thermal Shutdown Hysteresis
10
°C
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature and the regulator will go into thermal shutdown.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. The device is not guaranteed to function outside its operating rating.
5. For VIN range of 1.7V to 2.5V, output current is limited to 30mA.
6. Specification for packaged product only.
July 2010
5
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Characteristics
LDO1 Output Voltage
vs. Input Voltage
3.40
3.40
3.10
IOUT = 100µA
3.00
2.90
2.80
VBIAS = VIN1/2
2.70
VOUT_NOM = 3.3V
2.60
3.30
3.20
3.10
IOUT = 50mA
3.00
2.90
2.80
VBIAS = VIN1/2
2.70
VOUT_NOM = 3.3V
2.60
COUT = 1.0µF
2.50
3
3.5
4
4.5
5
5.5
3
4.5
5
IOUT = 100µA
2.40
2.35
VBIAS = VIN
VOUT_NOM = 2.5V
4
4.5
5
2.45
IOUT = 50mA
2.40
2.35
VBIAS = VIN
2.30
VOUT_NOM = 2.5V
OUTPUT VOLTAGE (V)
IOUT = 100µA
1.55
VBIAS = 5.5V
VOUT_NOM = 1.8V
1.40
1.35
3
3.5
4
4.5
5
1.7
2.2
2.7
3.2
3.7
4.2
4.7
5.2
1.70
1.65
IOUT = 50mA
1.50
1.45
VBIAS = 5.5V
VOUT_NOM = 1.8V
COUT = 1.0µF
1.7
2.2
2.7
3.2
3.7
4.2
4.7
5.2
1.00
0.98
0.96
VBIAS = 5.5V
0.94
VOUT_NOM = 1.0V
0.92
COUT = 1.0µF
3.2
3.7
4.2
4.7
INPUT VOLTAGE (V)
5.2
5.7
4
4.5
5
5.5
1.65
1.60
1.55
IOUT = 150mA
1.50
1.45
1.40
VBIAS = 5.5V
VOUT_NOM = 1.8V
COUT = 1.0µF
2.2
2.7
3.2
3.7
4.2
4.7
5.2
5.7
INPUT VOLTAGE (V)
LDO1 Output Voltage
vs. Output Current
3.40
3.38
1.06
IOUT = 1m A
1.04
1.02
1.00
0.98
0.96
VBIAS = 5.5V
0.94
VOUT_NOM = 1.0V
0.92
COUT = 1.0µF
0.90
0.90
2.7
3.5
LDO3 Output Voltage
vs. Input Voltage
1.7
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.02
2.2
3
1.80
1.75
1.70
5.7
1.08
IOUT = 100µA
1.7
VOUT_NOM = 2.5V
COUT = 1.0µF
1.35
1.30
LDO4 Output Voltage
vs. Input Voltage
1.10
1.08
1.04
VBIAS = VIN
2.30
INPUT VOLTAGE (V)
LDO4 Output Voltage
vs. Input Voltage
1.06
2.35
1.90
1.85
1.60
1.55
INPUT VOLTAGE (V)
1.10
IOUT = 150mA
2.40
INPUT VOLTAGE (V)
1.80
1.75
5.7
5.5
2.45
2.5
1.30
1.30
5
2.50
5.5
LDO3 Output Voltage
vs. Input Voltage
1.40
1.35
COUT = 1.0µF
4.5
2.20
1.90
1.85
1.75
1.70
4
LDO2 Output Voltage
vs. Input Voltage
INPUT VOLTAGE (V)
1.85
1.80
1.50
1.45
3.5
2.25
COUT = 1.0µF
2.5
5.5
LDO3 Output Voltage
vs. Input Voltage
1.65
1.60
3
2.55
INPUT VOLTAGE (V)
1.90
VOUT_NOM = 3.3V
COUT = 1.0µF
2.60
OUTPUT VOLTAGE (V)
3.5
VBIAS = VIN1/2
2.70
INPUT VOLTAGE (V)
2.20
3
2.80
2.5
2.50
2.25
COUT = 1.0µF
2.5
2.90
5.5
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.50
2.20
OUTPUT VOLTAGE (V)
4
2.55
2.25
OUTPUT VOLTAGE (V)
3.5
LDO2 Output Voltage
vs. Input Voltage
2.60
2.55
2.30
IOUT = 150mA
3.00
INPUT VOLTAGE (V)
LDO2 Output Voltage
vs. Input Voltage
2.45
3.10
2.50
2.5
INPUT VOLTAGE (V)
2.60
3.20
2.60
COUT = 1.0µF
2.50
2.5
July 2010
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.20
LDO1 Output Voltage
vs. Input Voltage
3.40
3.30
3.30
OUTPUT VOLTAGE (V)
LDO1 Output Voltage
vs. Input Voltage
1.7
2.2
2.7
3.2
3.7
4.2
4.7
INPUT VOLTAGE (V)
6
5.2
5.7
3.36
VIN = 3.6V
3.34
3.32
3.30
3.28
3.26
VBIAS = VIN1/2
3.24
VOUT_NOM = 3.3V
3.22
COUT = 1.0µF
3.20
0
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Characteristics (Continued)
3.38
3.36
3.36
OUTPUT VOLTAGE (V)
VIN = 4.2V
3.32
3.30
3.28
3.26
VBIAS = VIN1/2
3.24
VOUT_NOM = 3.3V
3.22
COUT = 1.0µF
2.58
VIN = 5.5V
3.34
3.32
3.30
3.28
3.26
VBIAS = VIN1/2
3.24
VOUT_NOM = 3.3V
3.22
COUT = 1.0µF
0
20 40 60 80 100 120 140 160 180 200
2.56
2.56
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.58
VIN = 3.6V
2.52
2.50
2.48
VBIAS = VIN1/2
2.44
VOUT_NOM = 2.5V
2.42
COUT = 1.0µF
2.40
50
100
150
VIN = 5.5V
2.54
2.52
2.50
2.48
2.46
VBIAS = VIN1/2
2.44
VOUT_NOM = 2.5V
2.42
COUT = 1.0µF
200
1.86
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.86
VIN = 3.6V
1.82
1.80
1.78
1.74
VOUT_NOM = 1.8V
1.72
COUT = 1.0µF
1.70
50
100
150
0.98
0.92
VBIAS = 3.0V
VOUT_NOM = 1.0V
COUT = 1.0µF
0.90
1.76
VBIAS = VIN3
1.74
VOUT_NOM = 1.8V
1.72
COUT = 1.0µF
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
July 2010
1.80
1.78
1.76
VBIAS = VIN3
1.74
VOUT_NOM = 1.8V
1.72
COUT = 1.0µF
50
1.04
100
150
200
LDO4 Output Voltage
vs. Output Current
1.06
1.04
VIN = 1.7V
1.02
1.00
0.98
0.96
VBIAS = 3.0V
0.94
VOUT_NOM = 1.0V
0.92
COUT = 1.0µF
0.90
50
100
150
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
200
OUTPUT CURRENT (mA)
LDO4 Output Voltage
vs. Output Current
3.40
LDO1 Output Voltage
vs. Temperature
3.38
VIN = 5.5V
1.02
1.00
0.98
0.96
VBIAS = 5.5V
0.94
VOUT_NOM = 1.0V
0.92
COUT = 1.0µF
3.36
IOUT = 100µA
IOUT = 50mA
3.34
3.32
3.30
3.28
3.26
3.24
3.22
IOUT =
150 A
VOUT_NOM = 3.3V
COUT = 1.0µF
3.20
0.90
OUTPUT CURRENT (mA)
1.82
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.00
0.94
VIN = 2.5V
1.84
1.10
1.78
1.06
200
LDO3 Output Voltage
vs. Output Current
0
1.08
VIN = 3.0V
150
OUTPUT CURRENT (mA)
1.80
1.10
100
1.86
200
VIN = 5.5V
0
LDO4 Output Voltage
vs. Output Current
1.02
0.96
150
1.82
200
1.08
1.04
50
1.08
1.84
OUTPUT CURRENT (mA)
1.06
100
1.70
0
1.10
50
LDO3 Output Voltage
vs. Output Current
1.90
1.88
VBIAS = VIN3
COUT = 1.0µF
OUTPUT CURRENT (mA)
1.88
1.76
VOUT_NOM = 2.5V
2.42
1.70
0
LDO3 Output Voltage
vs. Output Current
1.84
VBIAS = VIN1/2
2.44
1.88
OUTPUT CURRENT (mA)
1.90
2.46
1.90
2.40
0
2.48
OUTPUT CURRENT (mA)
LDO2 Output Voltage
vs. Output Current
2.60
2.58
2.46
2.50
0
OUTPUT VOLTAGE (V)
LDO2 Output Voltage
vs. Output Current
2.54
2.52
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
2.60
VIN = 3.0V
2.54
20 40 60 80 100 120 140 160 180 200
OUTPUT VOLTAGE (V)
0
2.56
2.40
3.20
3.20
LDO2 Output Voltage
vs. Output Current
2.60
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.38
3.34
LDO1 Output Voltage
vs. Output Current
3.40
OUTPUT VOLTAGE (V)
LDO1 Output Voltage
vs. Output Current
3.40
0 0.5 1 1.5 2
2.5 3 3.5 4 4.5 5
OUTPUT CURRENT (mA)
7
-40 -20
0
20
40
60
80 100 120
TEMPERATURE (°C)
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Characteristics (Continued)
1.88
2.56
IOUT = 100µA
OUTPUT VOLTAGE (V)
IOUT = 50mA
2.54
2.52
2.50
2.48
2.46
2.44
VOUT_NOM = 2.5V
IOUT = 150mA
COUT = 1.0µF
2.42
1.08
IOUT = 100µA
IOUT = 50mA
1.86
1.84
1.82
1.80
1.78
1.76
1.74
VOUT_NOM = 1.8V
IOUT = 150mA
COUT = 1.0µF
1.72
2.40
20
40
60
80
100 120
0
20
40
60
80
100 120
VOUT_NOM = 3.3V
COUT = 1µF
3
3.5
4
4.5
5
600
550
500
450
400
350
300
250
200
150
100
50
0
5.5
VBIAS = VIN1/2
VOUT_NOM = 2.5V
COUT = 1µF
2.5
3
3.5
4
4.5
5
500
20
40
VBIAS = 5.5V
VOUT_NOM = 1.0V
COUT = 1µF
60
80
3.7
4.2
4.7
350
300
250
200
VBIAS = VIN = 4.3V
100
VOUT_NOM = 3.3V
5.2
5.7
240
0
20
40
60
80
VOUT_NOM = 3.3V
COUT = 1µF
60
40
DROPOUT VOLTAGE (mV)
VBIAS = 4.3V
VBIAS = 4.3V
160
VOUT_NOM = 2.5V
COUT = 1µF
IOUT = 50mA
80
40
20
0
0
-40 -20
0
20
40
60
80 100 120
TEMPERATURE (°C)
5
5.5
30
COUT = 1µF
25
20
15
10
-20
0
20
40
60
80
100 120
TEMPERATURE (°C)
LDO2 Dropout Voltage
vs. Temperature
200
120
4.5
VBIAS = VIN = 4.3V
-40
100 120
320
IOUT = 150mA
160
4
VOUT_NOM = 1.0V
TEMPERATURE (°C)
IOUT = 150mA
IOUT = 50mA
3.5
0
-40 -20
LDO1 Dropout Voltage
vs. Temperature
120
3
5
COUT = 1µF
INPUT VOLTAGE (V)
140
COUT = 1µF
LDO4 Current Limit
vs. Temperature
35
DROPOUT VOLTAGE (mV)
3.2
VOUT_NOM = 1.8V
40
0
2.7
VBIAS = VIN3
2.5
LDO1/2/3 Current Limit
vs. Temperature
150
100 120
INPUT VOLTAGE (V)
400
50
0
2.2
300
250
200
150
100
50
0
5.5
CURRENT LIMIT (mA)
CURRENT LIMIT (mA)
CURRENT LIMIT (mA)
15
10
600
550
500
450
400
350
INPUT VOLTAGE (V)
20
5
DROPOUT VOLTAGE (mV)
0
LDO3 Current Limit
vs. Input Voltage
25
July 2010
VOUT_NOM = 1.0V
COUT = 1.0µF
-40 -20
450
80
IOUT = 5mA
0.94
LDO2 Current Limit
vs. Input Voltage
LDO4 Current Limit
vs. Input Voltage
100
0.96
LDO1 Current Limit
vs. Input Voltage
INPUT VOLTAGE (V)
180
0.98
TEMPERATURE (°C)
2.5
200
1.00
TEMPERATURE (°C)
VBIAS = VIN1/2
1.7
1.02
TEMPERATURE (°C)
300
250
200
150
100
50
0
30
1.04
0.90
-40 -20
CURRENT LIMIT (mA)
600
550
500
450
400
350
0
IOUT = 100µA
1.06
0.92
1.70
-40 -20
LDO4 Output Voltage
vs. Temperature
1.10
CURRENT LIMIT (mA)
OUTPUT VOLTAGE (V)
2.58
CURRENT LIMIT (mA)
LDO3 Output Voltage
vs. Temperature
1.90
OUTPUT VOLTAGE (V)
LDO2 Output Voltage
vs. Temperature
2.60
280
LDO3 Dropout Voltage
vs. Temperature
IOUT = 150mA
240
VBIAS = 4.3V
200
160
VOUT_NOM = 1.8V
IOUT = 50mA
COUT = 1µF
120
80
40
0
-40 -20
0
20
40
60
80 100 120
TEMPERATURE (°C)
8
-40 -20
0
20
40
60
80 100 120
TEMPERATURE (°C)
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Characteristics (Continued)
20
18
35
GROUND CURRENT (µA)
30
25
20
15
10
VIN = VBIAS = 3.6V
EN1 or EN2 or EN3 = ON
5
14
12
VBIAS = VIN = 3.6V
8
6
4
VBIAS = 2.5V, VIN = 1.7V
2
25
50
75
100
125
1
2
LDO4 Total Ground
Current vs. Input Voltage
INPUT GROUND CURRENT (µA)
14
12
10
8
VBIAS = VIN4
EN1 = EN2 = EN3 = OFF
Including IBIAS
No Load
2
0
5
6
7
8
9
20
2
2.5
3
3.5
4
2.5
16
14
12
10
8
6
VBIAS = 5.5V
4
VIN = VOUT + 1V
EN1 or EN2 or EN3= ON
2
4.5
5
5.5
25
50
75
100
125
LDO4 Input Ground
Current vs. Input Voltage
10
18
GROUND CURRENT (µA)
16
14
12
10
8
6
VBIAS = 5.5V
EN1 or EN2 or EN3 = ON
No Load
4
4.5
5
8
7
5
4
3
2
4
4
3
3
2
2
VBIAS = 5.5V
EN1 = EN2 = EN3 = OFF
No Load
1
1
3
3.5
4
4.5
5
45
40
35
30
25
20
15
VBIAS = 5.5V
10
VIN = VOUT + 1V
EN1 or EN2 or EN3= ON
5
0
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
July 2010
5
4
3
2
1
1
2
100 120
3
4
5
6
7
8
9
10
LDO1/2/3 Input Ground
Current vs. Temperature
VBIAS = 5.5V
EN1 or EN2 or EN3 = ON
No Load
18
16
14
12
10
8
6
4
2
-40
5.5
-20
0
20
40
60
80
100 120
TEMPERATURE (°C)
LDO1/2/3 Bias Ground
Current vs. Output Current
50
BIAS GROUND CURRENT (µA)
5
5.5
6
INPUT VOLTAGE (V)
LDO4 Input Ground
Current vs. Temperature
5
0
2.5
INPUT VOLTAGE (V)
5
VIN = VOUT + 1V
EN1 = EN2 = EN3 = OFF
7
20
6
5.5
VBIAS = 5.5V
8
0
0
3.5
4.5
OUTPUT CURRENT (mA)
1
0
4
9
150
VBIAS = 5.5V
EN1 = EN2 = EN3 = OFF
No Load
9
3
3.5
0
0
LDO1/2/3 Input Ground
Current vs. Input Voltage
2.5
3
LDO4 Input Ground
Current vs. Output Current
10
18
OUTPUT CURRENT (mA)
2
VBIAS = VIN1/2 = VIN3
EN1 or EN2 or EN3 = ON
Including IBIAS
No Load
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
4
15
10
0
1.5
GROUND CURRENT (µA)
4
INPUT GROUND CURRENT (µA)
GROUND CURRENT (µA)
16
4
3
LDO1/2/3 Input Ground
Current vs. Output Current
20
18
6
20
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
20
25
0
0
150
INPUT GROUND CURRENT (µA)
0
30
5
Including IBIAS
0
0
INPUT GROUND CURRENT (µA)
35
16
10
LDO1/2/3 Total Ground
Current vs. Input Voltage
40
VBIAS = VIN = 5.5V
LDO4 Bias Ground Current
vs. Output Current
20
BIAS GROUND CURRENT (µA)
TOTAL GROUND CURRENT(µA)
40
LDO4 Total Ground Current
vs. Output Current
GROUND CURRENT (µA)
LDO1/2/3 Total Ground
Current vs. Output Current
18
16
14
12
10
8
6
VBIAS = 5.5V
4
VIN = VOUT + 1V
EN1 = EN2 = EN3 = OFF
2
0
0
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
9
0
1
2
3
4
5
6
7
8
9
10
OUTPUT CURRENT (mA)
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Characteristics (Continued)
45
40
35
30
25
20
15
VBIAS = 5.5V
10
VIN = VOUT + 1V
EN1 or EN2 or EN3= ON
5
20
BIAS GROUND CURRENT (µA)
BIAS GROUND CURRENT (µA)
50
LDO4 Bias Ground
Current vs. Temperature
Noise (10Hz- 100kHz) = 200µVrms
1
14
12
10
8
6
VBIAS = 5.5V
4
2
0
20
40
60
80
100 120
-40
-20
0
TEMPERATURE (°C)
20
40
0.1
VIN = 3.8V
VOUT = 2.8V
COUT = 1µF
0.01
VIN = VOUT + 1V
EN1 = EN2 = EN3 = OFF
CBIAS = 0.1µF
Load = 150mA
0
-20
10
16
0
-40
LDO1 Output Noise
Spectral Density
18
NOISE uV/√Hz
LDO1/2/3 Bias Ground
Current vs. Temperature
60
80
100 120
0.001
10
TEMPERATURE (°C)
100
LDO2 Output Noise
Spectral Density
LDO2 Output Noise
Spectral Density
10,000
100,000
LDO3 Output Noise
Spectral Density
10
10
1,000
FREQUENCY (Hz)
10
Noise (10Hz - 100kHz) = 144µVrms
Noise (10Hz - 100kHz) = 160µVrms
Noise (10Hz - 100kHz) = 125µVrms
VIN = 4.0V
VOUT = 1.8V
VOUT = 1.8V
CBIAS = 0.1µF
Load = 100µA
CBIAS = 0.1µF
Load = 150mA
LDO3 Output Noise
Spectral Density
100,000
VIN = 3.9V
-90
-90
-80
-80
-70
-70
VOUT = 1.2V
-60
`
-50
-40
VIN = 4.3V
-20
-10
0.001
100
1000
10000
FREQUENCY(Hz)
100000
-90
-80
-80
-70
-70
PSRR (dB)
-90
-30
-30
-20
VOUT = 2.5V
-20
-10
COUT = 1µF
-10
July 2010
100
1000
10000
FREQUENCY(Hz)
100000
1000000
10000
100000
1000000
LDO3 PSRR (IOUT = 100µA)
-80
-70
`
-60
-50
-40
-30
VIN = 3.6V
VOUT = 2.5V
COUT = 1µF
VIN = 3.6V
-20
VOUT = 1.8V
-10
COUT = 1µF
0
0
10
1000
FREQUENCY(Hz)
-90
-50
-40
100
-100
-60
-40
0
10
1000000
LDO2 PSRR (IOUT = 150mA)
-100
VIN = 3.6V
COUT = 1µF
0
10
-100
`
VIN = 4.3V
VOUT = 3.3V
-10
COUT = 1µF
LDO2 PSRR (IOUT = 100µA)
-50
-40
0
100,000
`
-50
-20
VOUT = 3.3V
100,000
-60
-30
-30
COUT =1µF
-60
100
1,000
10,000
FREQUENCY (Hz)
LDO1 PSRR (IOUT = 150mA)
-100
PSRR (dB)
0.1
1,000
10,000
FREQUENCY (Hz)
10
LDO1 PSRR (IOUT = 100µA)
CBIAS = 0.1µF
Load = 150mA
PSRR (dB)
10,000
-100
1
100
1,000
FREQUENCY (Hz)
Noise (10Hz - 100kHz) = 105µVrms
10
100
PSRR (dB)
10
VOUT = 1.2V
COUT = 1µF
0.001
10
100,000
VIN = 4.3V
CBIAS = 0.1µF
Load = 100µA
0.01
100
1,000
10,000
FREQUENCY (Hz)
0.1
0.01
COUT = 1µF
10
NOISE uV/√Hz
0.1
COUT = 1µF
0.01
0.01
VIN = 4.0V
PSRR(dB)
0.1
1
NOISE uV/√Hz
NOISE uV/√Hz
NOISE uV/√Hz
1
1
10
100
1000
10000
FREQUENCY(Hz)
10
100000
1000000
10
100
1000
10000
100000 1000000
FREQUENCY (Hz)
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Characteristics (Continued)
LDO3 PSRR (IOUT = 150mA)
-100
-90
PSRR (dB)
-80
-70
-60
`
-50
-40
-30
VIN = 3.3V
-20
VOUT = 1.8V
-10
COUT = 1µF
0
10
100
1000
10000
100000
1000000
FREQUENCY(Hz)
July 2010
11
M9999-070110
Micrel, Inc.
MIC5374/84
Functional Characteristics
July 2010
12
M9999-070110
Micrel, Inc.
MIC5374/84
Functional Characteristics (Continued)
July 2010
13
M9999-070110
Micrel, Inc.
MIC5374/84
Functional Characteristics (Continued)
July 2010
14
M9999-070110
Micrel, Inc.
MIC5374/84
Functional Diagram
BIAS
INLDO1/2
EN1
LDO1
OUT1
LDO2
OUT2
EN2
INLDO3
EN3
LDO3
OUT3
OUT4
LDO4
INLDO4
MIC5374
Reference
POR
POR
POR_IN
MR
DLY
GND
MIC5374 Block Diagram
BIAS
INLDO1/2
EN1
MIC5384
LDO1
OUT1
LDO2
OUT2
EN2
INLDO3
EN3
INLDO4
LDO3
OUT3
OUT4
LDO4
Reference
POR
POR
POR_IN
MR
DLY
GND
MIC5384 Block Diagram
July 2010
15
M9999-070110
Micrel, Inc.
MIC5374/84
Pin Descriptions
the voltage at DLY reaches 1.25V. A delay can be added
by placing a capacitor from the DLY pin to ground.
INLDO
The LDO input pins INLDO1/2, INLDO3 and INLDO4
provide the input power to the linear regulators LDO1,
LDO2, LDO3 and LDO4. The input operating voltage
range is from 1.7V to 5.5V. For input voltages from 1.7V
to 2.5V the output current must be limited to 30mA each.
Due to line inductance a 1µF capacitor placed close to
the INLDO pins and the GND pin is recommended.
Please refer to layout recommendations.
POR_IN
The POR_IN (power-on-reset input) pin compares any
voltage to an internal 0.9V reference. This function can
be used to monitor any of the LDO outputs or any
external voltage rail. When the monitored voltage is
greater than 0.9V, the POR_IN flag will internally trigger
a 1.25µA source current to charge the external capacitor
at the DLY pin. A resistor divider network may be used
to divide down the monitored voltage to be compared
with the 0.9V at the POR_IN. This resistor network can
change the trigger point to any voltage level. A small
decoupling capacitor is recommended between POR_IN
and ground to reject high frequency noise that might
interfere with the POR circuit. Do not leave the POR_IN
pin floating.
BIAS
The BIAS pin provides power to the internal reference
and control sections of the MIC5374/84. A 0.1µF
ceramic capacitor must be connected from BIAS to GND
for clean operation.
EN (MIC5374)
The enable pins EN1, EN2 and EN3 provide logic level
control for the outputs OUT1, OUT2 and OUT3,
respectively. A logic high signal on an enable pin
activates the respective LDO. A logic low signal on an
enable pin deactivates the respective LDO. Do not leave
the EN pins floating, as it would leave the regulator in an
unknown state.
DLY
The delay pin is used to set the POR delay time. Adding
a capacitor to this pin adjusts the delay of the POR
signal. When the POR_IN flag is triggered, a constant
1.25µA current begins to charge the external capacitor
tied to the DLY pin. When the capacitor reaches 1.25V
the POR flag will be pulled high by the external pull up
resistor. The equation to calculate the charge time is
shown:
/EN (MIC5384)
The enable pins /EN1, /EN2 and /EN3 provide logic level
control for the outputs OUT1, OUT2 and OUT3,
respectively. A logic high signal on an enable pin
deactivates the respective LDO. A logic low signal on an
enable pin activates the respective LDO. Do not leave
the EN pins floating, as it would leave the regulator in an
unknown state.
⎛ 1.25V x C DLY ⎞
t Delay (s) = ⎜
⎟
−6
⎝ 1.25 x10
⎠
The delay time (t) is in seconds, the delay voltage is
1.25V internally, and the external delay capacitance
(CDLY) is in microfarads. For a 1µF delay capacitor, the
delay time will be 1 second. A capacitor at the DLY pin is
recommended when the POR function is used in order to
prevent unexpected triggering of the POR signal in noisy
systems.
OUT
OUT1, OUT2, OUT3 and OUT4 are the output pins of
each LDO. A minimum of 1µF capacitor be placed as
close as possible to each of the OUT pins. A minimum
voltage rating of 6.3V is recommended for each
capacitor.
MR
The MR (manual reset) pin resets the output of POR and
DLY generator regardless if the monitored voltage is in
regulation or not. Applying a voltage greater than 1.2V
on the MR pin will cause the POR voltage to be pulled
low. When a voltage below 0.2V is applied to the MR
pin, the internal 1.25µA will begin to charge the DLY pin
until it reaches 1.25V. When the DLY pin reaches
1.25V, the POR voltage will be pulled high by the
external pull up resistor. Do not leave the MR pin
floating.
GND
The GND pin is the ground path for the control circuitry
and the power ground for all LDOs. The current loop for
the ground should be kept as short as possible. Refer to
the layout recommendations for more details.
POR
The POR (power-on-reset) pin is an open drain output. A
resistor (10kΩ to 100kΩ) can be used for a pull up to
either the input or the output voltage of the regulator.
POR is pulled high by the external pull up resistor when
July 2010
16
M9999-070110
Micrel, Inc.
MIC5374/84
Application Information
will remain stable and in regulation with no load.
MIC5374/84 is a four output device with three 200mA
LDOs and a 1mA RTC LDO. The MIC5374/84
incorporates a POR function with the capability to
monitor any voltage using POR_IN. The monitored
voltage can be set to any voltage threshold level to
trigger the POR flag. A delay on the POR flag may also
be set with an external capacitor at the DLY pin. All the
LDOs have current limit and thermal shutdown
protection to prevent damage from fault conditions.
MIC5374 has active high enables while the MIC5384 has
active low enables.
Thermal Considerations
The MIC5374/84 is designed to provide three outputs up
to 200mA each of continuous current in a very small
package. Maximum ambient operating temperature can
be calculated based on the output current and the
voltage drop across the part. For example if the input
voltages are 3.6V and the output voltages are 3.3V,
2.5V, and 1.8V each with an output current = 150mA.
The actual power dissipation of the regulator circuit can
be determined using the equation:
PD = (VINLDO1/2 – VOUT1) I OUT1 +
RTC LDO
LDO4 is an always-on RTC LDO used for application
processor support and can provide 1mA of output
current. Power must be provided to the INLDO4 and
BIAS pins to keep LDO4 enabled.
(VINLDO1/2 – VOUT2) I OUT2 +
(VINLDO3 – VOUT3) I OUT3 +
(VINLDO4 – VOUT4) I OUT4 + VIN x IGND
As the MIC5374/84 is a CMOS device, the ground current
is typically <100µA over the load range, the power
dissipation contributed by the ground current is < 1% and
may be ignored for this calculation. Since LDO4 only
supplies 1mA of current, it can also be ignored for this
calculation.
PD ≈ (3.6V – 3.3V)150mA+(3.6V-2.5V)150mA+
(3.6V-1.8V)150mA
Input Capacitor
The MIC5374/84 is a high performance, high bandwidth
device. An input capacitor of 1µF from the input pin to
ground is required to provide stability. Low ESR ceramic
capacitors provide optimal performance in small board
area. Additional high frequency capacitors, such as
small valued NPO dielectric type capacitors, help filter
out high frequency noise and are good practice in any
RF based circuit. X5R or X7R dielectrics are
recommended for the input capacitor. Y5V dielectrics
lose most of their capacitance over temperature and are
therefore not recommended.
PD ≈ 0.48W
To determine the maximum ambient operating
temperature of the package, use the junction to ambient
thermal resistance of the device and the following basic
equation:
Output Capacitor
The MIC5374/84 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized for
use with low ESR ceramic chip capacitors. High ESR
capacitors may cause high frequency oscillation. The
output capacitor can be increased, but performance has
been optimized for a 1µF ceramic output capacitor and
does not improve significantly with larger capacitance.
X7R and X5R dielectric ceramic capacitors are
recommended
because
of
their
temperature
performance. X7R capacitors change capacitance by
15% over their operating temperature range and are the
most stable type of ceramic capacitors. Z5U and Y5V
dielectric capacitors change value by as much as 50%
and 60% respectively over their operating temperature
ranges. To use a ceramic chip capacitor with Y5V
dielectric the value must be much higher than an X7R
ceramic capacitor to ensure the same minimum
capacitance over the equivalent operating temperature
range.
⎛ TJ(MAX) − TA
PD(MAX) = ⎜⎜
θ JA
⎝
TJ(MAX) = 125°C
θJA = 100°C/W
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating the MIC5374-SJG1YMT at
an input voltage of 3.6V and 150mA load on LDO1,
LDO2 and LDO3 with a minimum layout footprint, the
maximum ambient operating temperature TA can be
determined as follows:
0.48W = (125°C – TA) / (100°C/W)
TA = 77°C
Therefore the maximum ambient operating temperature
of 77°C is allowed in a 2.5mm x 2.5mm Thin MLF®
package for the voltage options specified and at the
maximum load of 150mA on each output. For a full
No Load Stability
Unlike many other voltage regulators, the MIC5374/84
July 2010
⎞
⎟
⎟
⎠
17
M9999-070110
Micrel, Inc.
MIC5374/84
discussion of heat sinking and thermal effects on voltage
regulators, refer to the “Regulator Thermals” section of
Micrel’s Designing with Low-Dropout Voltage Regulators
handbook. This information can be found on Micrel's
July 2010
website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
18
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Circuit (MIC5374-xxxxYMT)
U1 MIC5374-xxxxYMT
BIAS
OUT1
INLDO1/ 2
OUT2
INLDO3
OUT3
INLDO4
OUT4
C1
0.1µF
C7
1µF
C6
1µF
C2
1µF
C5
1µF
C3
1µF
C4
1µF
EN1
POR
EN2
POR_IN
EN3
R4
100k
C8
1µF
VMONITOR
C9
DLY
MR
R10 VBIAS
10k
GND
R5
R6
C10
150pF
Bill of Materials
Item
Part Number
C1
C1005X5R1A104K
C2, C3, C4, C5,
C6, C7, C8
C1005X5R1A105K
C9
Optional
C10
C1005C0G1H151J
R4
CRCW0402100KFKED
Manufacturer
TDK
(1)
Description
Qty.
Capacitor, 0.1µF Ceramic, 10V, X5R, Size 0402
1
TDK
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
7
TDK
Capacitor, 150pF Cermaic, 50V, C0G, Size 0402
1
100kΩ, 1%, 0402
1
1
(2)
Vishay
R5, R6
Optional
Vishay
Optional
2
R10
CRCW040210KFKED
Vishay
10kΩ, 1%, 0402
1
U1
MIC5374-xxxxYMT
High Performance Active High Enable Triple 200mA
LDO with 1mA RTC LDO
1
Micrel, Inc.(3)
Notes:
1. TDK: www.tdk.com
2. Vishay: www.vishay.com
3. Micrel, Inc.: www.micrel.com
July 2010
19
M9999-070110
Micrel, Inc.
MIC5374/84
Typical Circuit (MIC5384-xxxxYMT)
U1 MIC5384-xxxxYMT
C1
0.1µF
BIAS
OUT1
INLDO1/ 2
OUT2
INLDO3
OUT3
INLDO4
OUT4
C7
1µF
C6
1µF
C2
1µF
C5
1µF
C3
1µF
C4
1µF
EN1
POR
EN2
POR_IN
EN3
R4
100k
C8
1µF
VMONITOR
C9
DLY
GND
MR
R10 VBIAS
10k
R5
R6
C10
150pF
Bill of Materials
Item
Part Number
C1
C1005X5R1A104K
C2, C3, C4, C5,
C6, C7, C8
C1005X5R1A105K
C9
Optional
C10
C1005C0G1H151J
Manufacturer
TDK
(1)
1
TDK
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
7
TDK
Capacitor, 150pF Cermaic, 50V, C0G, Size 0402
1
100kΩ, 1%, 0402
1
Optional
2
10kΩ, 1%, 0402
1
High Performance Active Low Enable Triple 200mA
LDO with 1mA RTC LDO
1
1
(2)
CRCW0402100KFKED
R5, R6
Optional
Vishay
R10
CRCW040210KFKED
Vishay
MIC5384-xxxxYMT
Qty.
Capacitor, 0.1µF Ceramic, 10V, X5R, Size 0402
R4
U1
Description
Vishay
Micrel, Inc.
(3)
Notes:
1. TDK: www.tdk.com
2. Vishay: www.vishay.com
3. Micrel, Inc.: www.micrel.com
July 2010
20
M9999-070110
Micrel, Inc.
MIC5374/84
PCB Layout Recommendations
Recommended Top Layout
Recommended Bottom Layout
July 2010
21
M9999-070110
Micrel, Inc.
MIC5374/84
Package Information
16-Pin 2.5mm x 2.5mm Thin MLF® (MT)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into2010
the body or (b) support or sustain life, and whose failure to perform can
to the user. A
July
22be reasonably expected to result in a significant injuryM9999-070110
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2010 Micrel, Incorporated.