MICREL MIC5383

MIC5373/83
Triple 200mA µCap
LDO in 2.5 x 2.5 Thin MLF
General Description
Features
The MIC5373/83 is a triple output device with three 200mA
LDOs which is ideal for application processor support in
mobile platforms. The MIC5373 provides independent
control active high enables for each of the 200mA LDOs.
The MIC5383 provides active low enables. Both the
MIC5373 and MIC5383 are available in the tiny 2.5mm x
2.5mm Thin MLF® package.
The MIC5373/83 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 MIC5373/83 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 MIC5373/83 operates with very small ceramic output
capacitors to reduce board space and component cost. It
is available in various fixed output voltages. The
MIC5373/83 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
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
MIC5383
MIC5373
BIAS
OUT1
0.1µF
INLDO1/ 2
OUT2
INLDO3
OUT3
POR
EN2
POR_IN
EN3
100k
MR
OUT1
INLDO1/ 2
OUT2
10k
10k
VBIAS
1µF
VMONITOR
10k
DLY
GND
INLDO3
OUT3
1µF
EN1
POR
EN2
POR_IN
EN3
150pF
100k
1µF
1µF
1µF
1µF
EN1
BIAS
0.1µF
1µF
1µF
1µF
1µF
MR
10k
10k
VBIAS
VMONITOR
10k
DLY
GND
150pF
Typical MIC5373-xxxYMT Circuit
Typical MIC5383-xxxYMT 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.
MIC5373/83
Ordering Information
Part Number
MIC5373-MG4YMT
Mark Code
Output Voltage(1)
Junction Temp. Range
Package
MG4
2.8V/1.8V/1.2V
–40° to +125°C
16-Pin 2.5mm x 2.5mm Thin MLF®
Pb-free
–40° to +125°C
®
Pb-free
MIC5383-MG4YMT
Z1T
2.8V/1.8V/1.2V
Lead
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
MIC5383
16-Pin 2.5mm x 2.5mm Thin MLF® (MT)
(Top View)
MIC5373
®
16-Pin 2.5mm x 2.5mm Thin MLF (MT)
(Top View)
July 2010
2
M9999-070110
Micrel, Inc.
MIC5373/83
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. 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
NC
Not internally connected.
10
NC
Not internally connected.
11
INLDO3
12
OUT3
Regulator Output – LDO3.
13
GND
Ground.
14
EN3 or /EN3
15
EN2 or /EN2
16
EN1 or /EN1
HS Pad
EPAD
July 2010
Supply Input (LDO3).
LDO3 Enable Input. EN (MIC5373): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5383): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO2 Enable Input. EN (MIC5373): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5383): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO1 Enable Input. EN (MIC5373): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5383): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
Exposed Heat Sink Pad. Connect to GND.
3
M9999-070110
Micrel, Inc.
MIC5373/83
Absolute Maximum Ratings(1)
Operating Ratings(4)
Supply Voltage (VINLDO1/2, INLDO3) ....................... -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) .................. +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)
(MIC5373) VIN = VOUT + 1V (VOUT is highest of the three regulator outputs); VBIAS = VEN1 = VEN2 = VEN3 = 5.5V (ON);
(MIC5383) 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 = 100µA; COUT1 = COUT2 = COUT3 = 1µF; TA = 25°C, Bold values indicate –40°C ≤ TJ ≤ +125°C, unless
noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Input Ground Current
Bias Ground Current
Conditions
Min
Variation from nominal VOUT1, 2, 3
-2.0
Variation from nominal VOUT1, 2, 3
-3.0
Typ
VIN = VOUT +1V to 5.5V; IOUT = 100µA
0.02
Max
Units
+2.0
%
+3.0
%
0.3
%/V
IOUT = 100µA to 150mA;
0.3
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
EN1 or EN2 or EN3 = ON;
32
70
µA
EN1 = EN2 = EN3 = ON;
103
160
µA
Shutdown Ground Current
EN1 = EN2 = EN3 = OFF
0.04
2
µA
Shutdown Bias Current
EN1 = EN2 = EN3 = OFF
0.02
2
µA
Ripple Rejection
f = 1kHz; COUT = 1.0µF;
55
200
Current Limit
VOUT = 0V
Output Voltage Noise
COUT =1µF,10Hz to 100kHz; IOUT = 150mA
Enable Input Voltage
350
700
200
mA
µVRMS
0.2
(MIC5373) LDO OFF; (MIC5383) LDO ON;
(MIC5373) LDO ON; (MIC5383) LDO OFF;
dB
1.2
V
V
VIL < 0.2V
0.01
µA
VIH > 1.2V
0.01
µA
Turn-on Time
COUT = 1µF
80
VPOR
POR Output Low Voltage
DLY Pin Current Source
VDLY = 0V
Enable Input Current
DLY Pin Voltage Threshold
IPOR
July 2010
POR Output Leakage Current, VPOR OFF
4
200
V
µA
0.75
1.25
2
1.13
1.25
1.38
1
µs
0.2
V
µA
M9999-070110
Micrel, Inc.
MIC5373/83
Electrical Characteristics (Continued)
Parameter
Conditions
VTH
POR Under Voltage Threshold
Min
Typ
Max
Units
0.873
0.9
0.927
V
VHYS
POR Hysteresis
34
mV
IPOR_IN
POR Input Pin Leakage Current
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.
MIC5373/83
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
2.2
2.7
3.2
3.7
4.2
4.7
5.2
1.70
1.65
IOUT = 50mA
1.60
1.55
1.50
1.45
VBIAS = 5.5V
VOUT_NOM = 1.8V
COUT = 1.0µF
1.7
5.7
3.36
VIN = 3.6V
3.32
3.30
3.28
3.26
VBIAS = VIN1/2
3.24
VOUT_NOM = 3.3V
3.22
COUT = 1.0µF
3.20
20 40 60 80 100 120 140 160 180 200
OUTPUT VOLTAGE (V)
3.38
3.36
OUTPUT CURRENT (mA)
VOUT_NOM = 2.5V
COUT = 1.0µF
3
3.5
2.2
2.7
3.2
3.7
4.2
4.7
4
4.5
5
5.5
LDO3 Output Voltage
vs. Input Voltage
5.2
1.80
1.75
1.70
1.65
1.60
1.55
IOUT = 150mA
1.50
1.45
1.40
VBIAS = 5.5V
VOUT_NOM = 1.8V
COUT = 1.0µF
1.35
1.30
1.7
5.7
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
0
VBIAS = VIN
2.30
INPUT VOLTAGE (V)
LDO1 Output Voltage
vs. Output Current
3.34
2.35
1.90
1.85
1.80
1.75
INPUT VOLTAGE (V)
3.40
IOUT = 150mA
2.40
INPUT VOLTAGE (V)
LDO1 Output Voltage
vs. Output Current
3.40
3.38
VIN = 4.2V
3.34
3.32
3.30
3.28
3.26
VBIAS = VIN1/2
3.24
VOUT_NOM = 3.3V
3.22
COUT = 1.0µF
OUTPUT VOLTAGE (V)
1.7
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
3.36
VIN = 5.5V
3.34
3.32
3.30
3.28
VBIAS = VIN1/2
3.26
3.24
VOUT_NOM = 3.3V
3.22
COUT = 1.0µF
3.20
3.20
0
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
6
0
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
M9999-070110
Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
2.58
2.56
2.56
OUTPUT VOLTAGE (V)
VIN = 3.0V
2.52
2.50
2.48
2.46
VBIAS = VIN1/2
2.44
VOUT_NOM = 2.5V
2.42
COUT = 1.0µF
2.40
2.58
VIN = 3.6V
2.54
2.52
2.50
2.48
2.46
VBIAS = VIN1/2
2.44
VOUT_NOM = 2.5V
2.42
COUT = 1.0µF
2.40
50
100
150
200
50
OUTPUT CURRENT (mA)
1.86
OUTPUT VOLTAGE (V)
VIN = 2.5V
1.82
1.80
1.78
1.76
VBIAS = VIN3
1.74
VOUT_NOM = 1.8V
1.72
COUT = 1.0µF
1.70
50
100
150
1.80
1.78
1.76
VBIAS = VIN3
1.74
VOUT_NOM = 1.8V
1.72
COUT = 1.0µF
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.32
3.30
3.28
3.26
VOUT_NOM = 3.3V
COUT = 1.0µF
50
100
150
40
60
1.80
1.78
VBIAS = VIN3
1.76
1.74
VOUT_NOM = 1.8V
1.72
COUT = 1.0µF
50
IOUT = 100µA
2.52
2.50
2.48
2.46
2.44
VOUT_NOM = 2.5V
IOUT = 150mA
150
COUT = 1.0µF
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
1.70
-40 -20
0
20
40
60
80
100 120
-40 -20
0
20
40
60
80
TEMPERATURE (°C)
LDO1 Current Limit
vs. Input Voltage
LDO2 Current Limit
vs. Input Voltage
LDO3 Current Limit
vs. Input Voltage
VOUT_NOM = 3.3V
COUT = 1µF
3
3.5
4
4.5
INPUT VOLTAGE (V)
5
5.5
200
LDO3 Output Voltage
vs. Temperature
1.90
IOUT = 50mA
2.54
100
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
VBIAS = VIN1/2
200
1.82
TEMPERATURE (°C)
300
250
200
150
100
50
0
2.5
150
VIN = 5.5V
1.84
1.88
2.56
80 100 120
CURRENT LIMIT (mA)
600
550
500
450
400
350
20
100
LDO3 Output Voltage
vs. Output Current
0
2.40
0
50
1.86
200
LDO2 Output Voltage
vs. Temperature
2.42
3.20
-40 -20
COUT = 1.0µF
1.70
2.60
IOUT = 50mA
3.22
VOUT_NOM = 2.5V
2.42
OUTPUT CURRENT (mA)
IOUT = 100µA
IOUT =
150 A
VBIAS = VIN1/2
2.44
0
2.58
3.24
2.46
1.90
1.82
0
3.38
3.34
2.48
OUTPUT CURRENT (mA)
VIN = 3.6V
1.84
200
LDO1 Output Voltage
vs. Temperature
3.36
2.50
1.88
OUTPUT CURRENT (mA)
3.40
2.52
200
1.70
0
CURRENT LIMIT (mA)
150
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.88
1.86
July 2010
100
LDO3 Output Voltage
vs. Output Current
1.90
1.88
1.84
VIN = 5.5V
2.54
OUTPUT CURRENT (mA)
LDO3 Output Voltage
vs. Output Current
1.90
2.56
2.40
0
OUTPUT VOLTAGE (V)
0
LDO2 Output Voltage
vs. Output Current
2.60
600
550
500
450
400
350
300
250
200
150
100
50
0
CURRENT LIMIT (mA)
OUTPUT VOLTAGE (V)
2.58
2.54
LDO2 Output Voltage
vs. Output Current
2.60
OUTPUT VOLTAGE (V)
LDO2 Output Voltage
vs. Output Current
2.60
VBIAS = VIN1/2
VOUT_NOM = 2.5V
COUT = 1µF
2.5
3
3.5
4
4.5
INPUT VOLTAGE (V)
7
5
5.5
600
550
500
450
400
350
300
250
200
150
100
50
0
100 120
VBIAS = VIN3
VOUT_NOM = 1.8V
COUT = 1µF
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
M9999-070110
Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
500
200
DROPOUT VOLTAGE (mV)
400
350
300
250
200
150
VBIAS = VIN = 4.3V
100
VOUT_NOM = 3.3V
50
140
VBIAS = 4.3V
120
VOUT_NOM = 3.3V
100
80
60
40
20
40
60
80
VOUT_NOM = 2.5V
120
0
240
VBIAS = 4.3V
200
VOUT_NOM = 1.8V
IOUT = 50mA
20
40
60
80
40
-40 -20
80 100 120
COUT = 1µF
120
80
40
0
20
40
60
25
20
15
10
VIN = VBIAS = 3.6V
EN1 or EN2 or EN3 = ON
5
25
20
50
75
100
125
14
12
10
8
6
VBIAS = 5.5V
4
VIN = VOUT + 1V
EN1 or EN2 or EN3= ON
2
50
75
100
125
20
14
12
10
8
6
VBIAS = 5.5V
EN1 or EN2 or EN3 = ON
No Load
4
3
OUTPUT CURRENT (mA)
45
40
35
30
25
20
15
VBIAS = 5.5V
10
VIN = VOUT + 1V
EN1 or EN2 or EN3= ON
5
0
3.5
4
4.5
5
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
16
4.5
5
5.5
14
12
10
8
6
4
2
5.5
-40
LDO1/2/3 Bias Ground
Current vs. Temperature
50
-20
0
20
40
60
80
100 120
TEMPERATURE (°C)
LDO1 Output Noise
Spectral Density
10
Noise (10Hz- 100kHz) = 200µVrms
45
40
1
35
30
25
20
15
10
5
VBIAS = 5.5V
VIN = VOUT + 1V
EN1 or EN2 or EN3= ON
-40
-20
0
20
40
VIN = 3.8V
VOUT = 2.8V
COUT = 1µF
CBIAS = 0.1µF
Load = 150mA
60
80
TEMPERATURE (°C)
8
0.1
0.01
0
0
4
VBIAS = 5.5V
EN1 or EN2 or EN3 = ON
No Load
18
INPUT VOLTAGE (V)
BIAS GROUND CURRENT (µA)
50
3.5
0
2.5
LDO1/2/3 Bias Ground
Current vs. Output Current
3
LDO1/2/3 Input Ground
Current vs. Temperature
16
150
VBIAS = VIN1/2 = VIN3
EN1 or EN2 or EN3 = ON
Including IBIAS
No Load
10
LDO1/2/3 Input Ground
Current vs. Input Voltage
NOISE uV/√Hz
25
15
2.5
0
0
20
INPUT VOLTAGE (V)
2
0
25
150
INPUT GROUND CURRENT (µA)
16
30
5
18
GROUND CURRENT (µA)
18
80 100 120
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
20
60
0
0
LDO1/2/3 Input Ground
Current vs. Output Current
40
35
30
80 100 120
20
LDO1/2/3 Total Ground
Current vs. Input Voltage
40
35
0
0
-40 -20
0
TEMPERATURE (°C)
LDO1/2/3 Total Ground
Current vs. Output Current
40
IOUT = 150mA
160
COUT = 1µF
IOUT = 50mA
TEMPERATURE (°C)
LDO3 Dropout Voltage
vs. Temperature
280
VBIAS = 4.3V
160
0
-40 -20
100 120
GROUND CURRENT (µA)
0
TOTAL GROUND CURRENT(µA)
DROPOUT VOLTAGE (mV)
200
0
320
INPUT GROUND CURRENT (µA)
COUT = 1µF
IOUT = 50mA
TEMPERATURE (°C)
BIAS GROUND CURRENT (µA)
IOUT = 150mA
160
0
July 2010
240
20
COUT = 1µF
-40 -20
LDO2 Dropout Voltage
vs. Temperature
IOUT = 150mA
180
450
CURRENT LIMIT (mA)
LDO1 Dropout Voltage
vs. Temperature
DROPOUT VOLTAGE (mV)
LDO1/2/3 Current Limit
vs. Temperature
100 120
0.001
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
M9999-070110
Micrel, Inc.
MIC5373/83
Typical Characteristics (Continued)
LDO2 Output Noise
Spectral Density
LDO3 Output Noise
Spectral Density
LDO2 Output Noise
Spectral Density
10
10
10
Noise (10Hz - 100kHz) = 144µVrms
Noise (10Hz - 100kHz) = 160µVrms
Noise (10Hz - 100kHz) = 125µVrms
VIN = 4.0V
VOUT = 1.8V
VIN = 4.0V
0.1
VOUT = 1.8V
COUT = 1µF
CBIAS = 0.1µF
Load = 100µA
CBIAS = 0.1µF
Load = 150mA
0.01
100
1,000
10,000
0.001
10
100,000
100
LDO3 Output Noise
Spectral Density
VIN = 3.9V
-90
-80
-70
-70
-60
`
-50
-40
CBIAS = 0.1µF
Load = 150mA
VIN = 4.3V
10
-80
-80
-70
-70
PSRR (dB)
-90
PSRR (dB)
-100
-90
1000
10000
FREQUENCY(Hz)
100000
-30
-30
-20
VOUT = 2.5V
-20
-10
COUT = 1µF
-10
100
1000
10000
FREQUENCY(Hz)
100000
1000000
1000
10000
FREQUENCY(Hz)
100000
1000000
LDO3 PSRR (IOUT = 100µA)
-90
-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
100
-100
-50
-40
0
10
1000000
-60
-40
VIN = 3.6V
COUT = 1µF
0
LDO2 PSRR (IOUT = 150mA)
-100
`
100
VIN = 4.3V
VOUT = 3.3V
-10
COUT = 1µF
LDO2 PSRR (IOUT = 100µA)
-50
-40
0
100,000
100,000
`
-50
-20
VOUT = 3.3V
-10
0.001
10,000
-60
-30
-30
-20
1,000
LDO1 PSRR (IOUT = 150mA)
-80
COUT =1µF
-60
100
FREQUENCY (Hz)
-90
VOUT = 1.2V
1,000
10,000
FREQUENCY (Hz)
10
-100
PSRR (dB)
NOISE uV/√Hz
0.1
100
100,000
LDO1 PSRR (IOUT = 100µA)
1
10
10,000
-100
Noise (10Hz - 100kHz) = 105µVrms
0.01
1,000
FREQUENCY (Hz)
FREQUENCY (Hz)
10
COUT = 1µF
CBIAS = 0.1µF
Load = 100µA
PSRR (dB)
10
VIN = 4.3V
VOUT = 1.2V
0.01
COUT = 1µF
0.01
0.1
PSRR(dB)
0.1
1
NOISE uV/√Hz
NOISE uV/√Hz
NOISE uV/√Hz
1
1
10
100
1000
10000
FREQUENCY(Hz)
100000
1000000
10
100
1000
10000
100000 1000000
FREQUENCY (Hz)
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
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M9999-070110
Micrel, Inc.
MIC5373/83
Functional Characteristics
July 2010
10
M9999-070110
Micrel, Inc.
MIC5373/83
Functional Characteristics (Continued)
July 2010
11
M9999-070110
Micrel, Inc.
MIC5373/83
Functional Characteristics (Continued)
July 2010
12
M9999-070110
Micrel, Inc.
MIC5373/83
Functional Diagram
BIAS
INLDO1/2
EN1
LDO1
OUT1
LDO2
EN2
INLDO3
EN3
OUT2
OUT3
LDO3
Enable Logic
Reference
POR
POR
POR IN
MR
DLY
GND
MIC5373 Block Diagram (Active High Enable)
BIAS
INLDO1/2
EN1
EN2
LDO1
OUT1
LDO2
INLDO3
EN3
OUT2
OUT3
LDO3
Enable Logic
Reference
POR
POR
POR IN
MR
DLY
GND
MIC5383 Block Diagram (Active Low Enable)
July 2010
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M9999-070110
Micrel, Inc.
MIC5373/83
Pin Descriptions
the DLY pin to ground.
INLDO
The LDO input pins INLDO1/2 and INLDO3 provide the
input power to the linear regulators LDO1, LDO2 and
LDO3. 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 MIC5373/83. A 0.1µF
ceramic capacitor must be connected from BIAS to GND
for clean operation.
EN (MIC5373)
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 will be pulled high by the external pull up
resistor. The equation to calculate the charge time is
shown:
/EN (MIC5383)
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 and OUT3 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 pull up
external resistor again. 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 asserted high when the voltage at DLY reaches
1.25V. A delay can be added by placing a capacitor from
July 2010
14
M9999-070110
Micrel, Inc.
MIC5373/83
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:
Application Information
MIC5373/83 is a triple output device with three 200mA
LDOs. The MIC5373/83 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. MIC5373 has active high enables while the
MIC5383 has active low enables.
PD = (VINLDO1/2 – VOUT1) I OUT1 +
(VINLDO1/2 – VOUT2) I OUT2 +
(VINLDO3 – VOUT3) I OUT3 + VIN x IGND
As the MIC5373/83 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.
PD ≈ (3.6V – 2.8V)150mA+(3.6V-1.8V)150mA+
(3.6V-1.2V)150mA
Input Capacitor
The MIC5373/83 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 ≈ 0.75W
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:
⎛ TJ(MAX) − TA
PD(MAX) = ⎜⎜
θ JA
⎝
Output Capacitor
The MIC5373/83 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) = 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 MIC5373-MG4YMT 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:
0.75W = (125°C – TA) / (100°C/W)
TA = 50°C
Therefore the maximum ambient operating temperature
of 50°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
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
website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
No Load Stability
Unlike many other voltage regulators, the MIC5373/83
will remain stable and in regulation with no load.
Thermal Considerations
The MIC5373/83 is designed to provide three outputs up
to 200mA each of continuous current in a very small
package. Maximum ambient operating temperature can
July 2010
⎞
⎟
⎟
⎠
15
M9999-070110
Micrel, Inc.
MIC5373/83
Typical Circuit (MIC5373-xxxYMT)
U1 MIC5373-xxxYMT
C1
0.1µF
BIAS
OUT1
INLDO1/ 2
OUT2
INLDO3
OUT3
C7
1µF
C6
1µF
C2
1µF
C5
1µF
C3
1µF
EN1
POR
EN2
POR_IN
EN3
R4
100k
DLY
GND
MR
R10 VBIAS
10k
VMONITOR
C9
R5
R6
C10
150pF
Bill of Materials
Item
Part Number
C1
C1005X5R1A104K
TDK(1)
C2,C3, C5, C6,
C7
C1005X5R1A105K
TDK
C9
Optional
C10
C1005C0G1H151J
R4
CRCW0402100KFKED
Manufacturer
Description
Qty.
Capacitor, 0.1µF Ceramic, 10V, X5R, Size 0402
1
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
5
1
TDK
(2)
Vishay
Capacitor, 150pF Cermaic, 50V, C0G, Size 0402
1
100kΩ, 1%, 0402
1
R5, R6
Optional
Vishay
Optional
2
R10
CRCW040210KFKED
Vishay
10kΩ, 1%, 0402
1
High Performance Active-High Enable Triple LDO
1
U1
MIC5373-xxxYMT
Micrel, Inc.
(3)
Notes:
1. TDK: www.tdk.com
2. Vishay: www.vishay.com
3. Micrel, Inc.: www.micrel.com
July 2010
16
M9999-070110
Micrel, Inc.
MIC5373/83
Typical Circuit (MIC5383-xxxYMT)
U1 MIC5383-xxxYMT
C1
0.1µF
BIAS
OUT1
INLDO1/ 2
OUT2
INLDO3
OUT3
C7
1µF
C6
1µF
C2
1µF
C5
1µF
C3
1µF
EN1
POR
EN2
POR_IN
EN3
R4
100k
DLY
GND
MR
R10 VBIAS
10k
VMONITOR
C9
R5
R6
C10
150pF
Bill of Materials
Item
Part Number
C1
C1005X5R1A104K
C2,C3, C5, C6,
C7
C1005X5R1A105K
C9
Optional
C10
C1005C0G1H151J
R4
CRCW0402100KFKED
R5, R6
Optional
R10
CRCW040210KFKED
U1
MIC5383-xxxYMT
Manufacturer
TDK
(1)
TDK
Description
Qty.
Capacitor, 0.1µF Ceramic, 10V, X5R, Size 0402
1
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
5
1
TDK
Capacitor, 150pF Cermaic, 50V, C0G, Size 0402
1
100kΩ, 1%, 0402
1
Vishay
Optional
2
Vishay
10kΩ, 1%, 0402
1
High Performance Active-Low Enable Triple LDO
1
Vishay(2)
Micrel, Inc.(3)
Notes:
1. TDK: www.tdk.com
2. Vishay: www.vishay.com
3. Micrel, Inc.: www.micrel.com
July 2010
17
M9999-070110
Micrel, Inc.
MIC5373/83
PCB Layout Recommendations
Recommended Top Layout
Recommended Bottom Layout
July 2010
18
M9999-070110
Micrel, Inc.
MIC5373/83
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
19be 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.