Micrel MIC2214-2.7/3.3BML Portable power management ic Datasheet

MIC2214
Micrel
MIC2214
Portable Power Management IC
General Description
Features
The MIC2214 is a dual µCap, low dropout regulator with an
open-drain driver and power-on reset circuit. The first regulator is capable of sourcing 150mA, while the second regulator can source up to 300mA and includes a power-on reset
function. The open-drain output is capable of sinking 150mA
for LED backlighting applications.
Ideal for battery operated applications, the MIC2214 offers
1% accuracy, extremely low dropout voltage (80mV @
100mA), and extremely low ground current, only 48µA total.
Equipped with a TTL-logic-compatible enable pin, the MIC2214
can be put into a zero-off-mode current state, drawing no
current when disabled.
The MIC2214 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
The MIC2214 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF™ leadless package and is also
available with adjustable output voltages in the 4mm × 4mm
16-pin MLF™ package.
• Input voltage range: 2.25V to 5.5V
• Stable with ceramic output capacitor
• 2 LDO outputs
• Output 1 – 150mA output current
• Output 2 – 300mA output current
• 1 Open-drain driver
• Power-on reset function with adjustable delay time
• Low dropout voltage of 80mV @ 100mA
• Ultra-low quiescent current of 48µA
• High output accuracy:
• +1.0% initial accuracy
• +2.0% over temperature
• Thermal shutdown protection
• Current limit protection
• Tiny 3mm × 3mm MLF™-10 package
Applications
• Cellular/PCS phones
• Wireless modems
• PDAs
Typical Application
100kΩ
MIC2214-xxBML
VIN
1µF
0.01µF
OFF
OFF
VIN
VOUT1
VANALOG
EN
VOUT2
VDIGITAL
VCORE
ON
CBYP
POR
SW
DRV
ON
1µF
Ceramic
Keyboard Backlighting LED
SET
CDELAY
/RST
Baseband
µProcessor
MEMORY
GND
MIC2214 Typical Cellphone Application
MicroLeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2004
1
MIC2214
MIC2214
Micrel
Ordering Information
Full Part Number
MIC2214-1.8/2.8BML
Manufacturing
Part Number
Voltage*
(Vo1/Vo2)
Junction Temp. Range
Package
MIC2214-GMBML
1.8V/2.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-1.85/2.6BML
MIC2214-DKBML
1.85V/2.6V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-1.85/2.85BML
MIC2214-DNBML
1.85V/2.85V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-2.5/1.8BML
MIC2214-JGBML
2.5V/1.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-2.5/2.8BML
MIC2214-JMBML
2.5V/2.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-2.5/3.0BML
MIC2214-JPBML
2.5V/3.0V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-2.6/2.85BML
MIC2214-KNBML
2.6V/2.85V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-2.7/3.0BML
MIC2214-LPBML
2.7V/3.0V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-2.7/3.3BML
MIC2214-LSBML
2.7V/3.3V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-3.0/1.6BML
MIC2214-PWBML
3.0V/1.6V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-3.0/2.8BML
MIC2214-PMBML
3.0V/2.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-3.0/3.3BML
MIC2214-PSBML
3.0V/3.3V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-3.3/1.6BML
MIC2214-SWBML
3.3V/1.6V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-3.3/1.8BML
MIC2214-SGBML
3.3V/1.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-3.3/2.8BML
MIC2214-SMBML
3.3V/2.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC2214-Adj/AdjBML
MIC2214-AABML
Adj/Adj
–40°C to +125°C
16-Pin 4×4 MLF™
* For other output voltage options, contact Micrel marketing.
Voltage
Code
Adj
A
1.5
F
1.6
W
1.8
G
1.85
D
1.9
Y
2.0
H
2.1
E
2.5
J
2.6
K
2.7
L
2.8
M
2.850
N
2.9
O
3.0
P
3.1
Q
3.2
R
3.3
S
3.4
T
3.5
U
3.6
V
Table 1. Voltage Codes
MIC2214
2
August 2004
BYP 3
8 POR
SW 4
7 DRV
SET 5
6 GND
VOUT2
13
EN1 1
12 POR
EN2 2
11 DRV
BYP 3
10 ADJ
ADJ1 4
9 NGND
5
6
7
8
GND
9 VOUT2
14
GND
EN 2
15
SET
10 VOUT1
16
SW
VIN 1
VOUT1
Pin Configuration
VIN
Micrel
VIN
MIC2214
16-Pin 4mm × 4mm MLF™ (ML)
10-Pin 3mm × 3mm MLF™ (ML)
(Top View)
Pin Description
Pin Number
MLF-10 (3x3)
Pin Number
MLF-16 (4x4)
Pin Name
1
15, 16
VIN
Supply Input: (VIN1 and VIN2 are internally tied together)
2
–
EN
Enable Input: Enables both regulator outputs. Active High. High = on, low =
off. Do not leave floating.
–
1
EN1
Enable Input to Regulator 1: Enables regulator 1 output. Active high input.
High = on, low = off. Do not leave floating.
–
2
EN2
Enable Input to Regulator 2: Enables regulator 2 output. Active high input.
High = on, low = off. Do not leave floating.
3
3
CBYP
4
5
SW
–
4
ADJ1
Adjust Input (Regulator 1): Connect feedback resistors to program the
output voltage for the regulator.
5
6
SET
Delay Set Input: Connect external capacitor to GND to set the internal delay
for the POR output. When left open, there is no delay. This pin cannot be
grounded.
6
7,8
GND
Ground: Connect externally to exposed pad.
–
9
NGND
Ground for the open-drain driver. Tied to the source of the NMOSFET. Tied
to GND internally.
–
10
ADJ2
Adjust Input (Regulator 2): Connect feedback resistors to program the
output voltage for the regulator.
7
11
DRV
Open-Drain Output: Capable of sinking 150mA.
8
12
POR
Power-On Reset Output: Open-drain output. Active low indicates an output
undervoltage condition on regulator 2.
9
13
VOUT2
Output of Regulator 2: 300mA output current
10
14
VOUT1
Output of Regulator 1: 150mA output current
EP
EP
GND
August 2004
Pin Function
Reference Bypass: Connect external 0.01µF to GND to reduce output noise.
May be left open.
Active high signal drives open-drain N-Channel MOSFET.
Ground: Internally connected to the exposed pad. Connect externally to
ground pin.
3
MIC2214
MIC2214
Micrel
Absolute Maximum Rating (Note 1)
Operating Ratings (Note 2)
Supply Input Voltage (VIN) .................................... 0V to 7V
Enable Input Voltage (VEN) ................................... 0V to 7V
Power Dissipation (PD) ............... Internally Limited, Note 3
Junction Temperature .............................. –40°C to +125°C
Storage Temperature (TS) ......................... –65°C to 150°C
Open-Drain Output (DRV) ........................................ 250mA
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Supply Input Voltage (VIN) ............................ 2.25V to 5.5V
Enable Input Voltage (VEN) .................................. 0V to Vin
Junction Temperature (TJ) ....................... –40°C to +125°C
Package Thermal Resistance
MLF™-10 (θJA)1" square 2oz. copper ................. 60°C/W
Electrical Characteristics (Note 4)
VIN = VOUT +1.0V for higher output of the regulator pair; COUT = 1.0µF, IOUT = 100µA; TJ = 25°C, bold values indicate
–40°C ≤ TJ ≤ +125°C; unless noted.
Parameter
Conditions
Min
Output Voltage Accuracy
Variation from nominal VOUT
–1.0
–2.0
Output Voltage Temp. Coefficient
Typ
VIN = VOUT +1V to 5.5V
Load Regulation
IOUT = 100µA to 150mA (Regulator 1 and 2)
–0.3
–0.6
+1.0
+2.0
%
%
ppm/C
0.02
0.3
0.6
%/V
0.2
1.0
%
1.5
%
IOUT = 100µA to 300mA (Regulator 2)
Ground Pin Current
Units
40
Line Regulation; Note 5
Dropout Voltage; Note 6
Max
IOUT = 150mA (Regulator 1 and 2)
120
190
250
mV
mV
IOUT = 300mA (Regulator 2)
240
340
420
mV
IOUT1 = IOUT2 = 0µA
48
65
80
µA
µA
IOUT1 = 150mA & IOUT2 = 300mA
60
µA
Ground Pin Current in Shutdown
VEN ≤ 0.4V
Ripple Rejection
f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF
60
dB
f = 20kHz; COUT = 1.0µF ceramic; CBYP = 10nF
40
dB
Current Limit
Output Voltage Noise
2.0
µA
VOUT = 0V (Regulator 1)
150
280
460
mA
VOUT = 0V (Regulator 2)
300
450
700
mA
COUT =1µF, CBYP =0.01µF, 10Hz to 100kHz
µVrms
30
Enable Input
Enable Input Voltage
Enable Input Current
Logic Low (Regulator Shutdown)
0.6
V
Logic High (Regulator Enabled)
1.8
V
VIL < 0.6V (Regulator Shutdown)
–1
0.01
+1
µA
VIH > 1.8V (Regulator Enabled)
–1
0.01
+1
µA
Low Threshold, % of nominal VOUT2 (Flag ON)
90
POR Output
VTH
%
High Threshold, % of nominal VOUT2 (Flag OFF)
VOL
POR output logic low voltage; IL = 250µA
IPOR
Flag leakage current, flag OFF
MIC2214
–1
4
96
%
0.02
0.1
V
0.01
+1
µA
August 2004
MIC2214
Parameter
Micrel
Conditions
Min
Typ
Max
Units
0.2
0.5
0.6
V
0.01
+1
µA
0.6
V
DRV Output
Voltage Low
IDRV = 150mA
Leakage Current
IDRV = 0mA, VDRV = 5.5V, SW = 0V
SW Input Voltage
Logic Low (DRV shutdown)
SW Input Current
–1
Logic High (DRV enabled)
1.8
V
VIL < 0.6V (DRV shutdown)
–1
0.01
+1
µA
VIH > 1.8V (DRV enabled)
–1
0.01
+1
µA
0.75
1.25
1.75
µA
SET Input
SET Pin Current Source
VSET = 0V
SET Pin Threshold Voltage
POR = High
1.25
V
Note 1.
Exceeding maximum rating may damage the device.
Note 2.
The device is not guaranteed to work outside its operating rating.
Note 3.
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.
Note 4.
Specification for packaged product only.
Note 5.
Minimum input for line regulation test is set to VOUT + 1V relative to the highest output voltage.
Note 6.
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential. For outputs below 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.25V. Minimum
input operating voltage is 2.25V.
August 2004
5
MIC2214
MIC2214
Micrel
PSRR Output 1
PSRR Output 2
80
80
CBYP = 100nF
CBYP = 100nF
CBYP = 10nF
40
20
CBYP = 1nF
VIN = VOUT + 1
IOUT = 300mA
COUT = 1µF
0
0.01
1000
0.1
1
10
100
FREQUENCY (kHz)
1000
Spectral Noise
Density Output 1
10E-6
100µA Load
1E-6
100E-9
COUT = 1µF
C = 1µF
IN
CBYP = 0.01µF
10E-9
10
Dropout Characteristics
Output 1
Spectral Noise
Density Output 2
1k
100
10k 100k
FREQUENCY (Hz)
1M
Dropout Characteristics
Output 2
3
3
2.5
2.5
10E-6
1E-6
100E-9
COUT = 1µF
C = 1µF
2
1.5
100µA
150mA
1
0.5
IN
OUTPUT (V)
OUTPUT (V)
100µA Load
2
100µA
300mA
1.5
1
0.5
CBYP = 0.01µF
200
150
100
0
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
0
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
Ground Current
vs. Output 1 Current
Ground Current
vs. Output 2 Current
30
20
10
0
0 20 40 60 80 100 120 140
OUTPUT 1 LOAD CURRENT (mA)
30
20
10
1
2
3
4
5
SUPPLY VOLTAGE (V)
6
Ground Pin Current
60
50
40
30
20
10
0
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
6
1mA
50
100µA
40
0µA
30
20
10
Load on both outputs
0
140
160
40
40
100
120
50
Output 1 and 2
with 100µA load
0
0
60
GROUND CURRENT (µA)
GROUND CURRENT (µA)
60
MIC2214
50
50
60
80
50
300mA load
250
GROUND CURRENT (µA)
100
60
350
300
1
2
3
4
5
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage
Dropout Voltage
Output 2
Dropout Voltage
Output 1
150mA load
0
0
1
2
3
4
5
SUPPLY VOLTAGE (V)
20
40
0
0
1M
GROUND PIN CURRENT (µA)
DROPOUT VOLTAGE (mV)
150
100
1k
10k 100k
FREQUENCY (Hz)
-40
-20
0
10E-9
10
DROPOUT VOLTAGE (mV)
SPECTRAL NOISE DENSITY (V/root Hz)
0.1
1
10
100
FREQUENCY (kHz)
CBYP = 1nF
40
20
VIN = VOUT + 1
IOUT = 150mA
COUT = 1µF
0
0.01
CBYP = 10nF
60
PSRR (dB)
PSRR (dB)
60
SPECTRAL NOISE DENSITY (V/root Hz)
Typical Characteristics
TEMPERATURE (°C)
August 2004
MIC2214
Micrel
Typical Characteristics (cont.)
Output Voltage
vs. Load Current
Output Voltage
vs. Load Current
2.605
2.600
2.595
2.590
2.585
2.580
0
25 50 75 100 125 150
OUTPUT 1 LOAD CURRENT (mA)
2.860
2.855
2.850
2.845
2.840
2.835
2.830
2.825
2.820
0
50 100 150 200 250 300
OUTPUT 2 LOAD CURRENT (mA)
Output Voltage 2
vs. Temperature
2.85
2.80
2.75
2.70
2.65
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
3.05
3.00
2.95
2.90
Enable Voltage Threshold
vs. Supply Voltage
1.60
Drive Current = 1mA
1.00
0.80
0.60
0.40
0.20
0.00
2.25 2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
ENABLE THRESHOLD (V)
SWITCH THRESHOLD (V)
100µA load
100µA load
2.85
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (°C)
1.20
2.90
3.10
Switch Threshold
vs. Supply Voltage
2.95
OUTPUT VOLTAGE (V)
3.15
OUTPUT VOLTAGE (V)
2.870
2.865
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.610
Output Voltage 1
vs. Temperature
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
2.25 2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
POR Delay
10M
1M
TIME (µs)
100k
10k
1k
100
CIN = 1µF
COUT = 1µF
ILOAD = 100µA
10
1
1
August 2004
10 100 1k 10k 100k 1M
POR SETTING CAP (pF)
7
MIC2214
MIC2214
Micrel
Functional Characteristics
VOUT2
(1V/div)
POR
VOUT1
(1V/div)
(2V/div)
VOUT1
(2V/div)
VEN
(2V/div)
Power-On Reset Characteristics
VEN
(2V/div)
Enable Characteristics
VOUT2
(1V/div)
CIN = 1µF
COUT = 1µF Ceramic
CBYP = 0.01µF
VIN = 5V
CIN = 1µF
COUT = 1µF Ceramic
CSET = 0.01µF
CBYP = 0.01µF
VIN = 5V
Time (100µs/div)
Time (2ms/div)
Load Transient Response (LDO 1)
Load Transient Response (LDO 2)
300mA
VOUT2
IOUT2
(100mV/div) (200mA/div)
100µA
CIN = 1µF
COUT = 1µF
CBYP = 0.01µF
VIN = VOUT+1V
VOUT1
(100mV/div)
VOUT2
(50mV/div)
VOUT1
IOUT1
(50mV/div) (100mA/div)
150mA
Time (4µs/div)
MIC2214
100µA
CIN = 1µF
COUT = 1µF
CBYP = 0.01µF
VIN = VOUT+1V
Time (4µs/div)
8
August 2004
MIC2214
Micrel
Functional Diagram
VIN
OUT1
LDO1
EN
OUT2
LDO2
POR & Delay
POR
SET
CBYP
DRV
Reference
SW
SW Logic
GND
NGND
MIC2214 Fixed Voltage Block Diagram
OUT1
VIN1
LDO1
ADJ1
EN1
OUT2
VIN2
LDO2
ADJ2
EN2
SET
CBYP
POR & Delay
Quickstart
Reference
POR
DRV
SW
SW Logic
GND
NGND
MIC2214 Adjustable Voltage Block Diagram
Power-On Reset (POR)
The power-on reset output is an open-drain N-Channel
device, requiring a pull-up resistor to either the input voltage
or output voltage for proper voltage levels. The POR output
has a delay time that is programmable with a capacitor from
the SET pin to ground. The delay time can be programmed to
be as long as 1 second.
The SET pin is a current source output that charges a
capacitor that sets the delay time for the power-on reset
output. The current source is a 1µA current source that
charges a capacitor up from 0V. When the capacitor reaches
1.25V, the output of the POR is allowed to go high.
Open-Drain Driver (DRV)
The drive (DRV) pin is an open-drain output capable of
sinking 150mA of current. This output is controlled by a logic
level input, the switch (SW) pin. The switch pin is an active
high input and cannot be left floating.
Functional Description
The MIC2214 is a high performance, low quiescent current
power management IC consisting of two µCap low dropout
regulators, a power-on reset (POR) circuit and an open-drain
driver. The first regulator is capable of sourcing 150mA at
output voltages from 1.25V to 5V. The second regulator is
capable of sourcing 300mA of current at output voltages from
1.25V to 5V. The second regulator has a POR circuit that
monitors its output voltage and indicates when the output
voltage is within 5% of nominal. The POR offers a delay time
that is externally programmable with a single capacitor to
ground. An open-drain driver completes the power management chipset, offering the capability of driving LEDs for
keypad backlighting in applications such as cellphones.
Enable
The enable input allows for logic control of both output
voltages with one enable input. The enable input is active
high, requiring 1.8V for guaranteed operation. The enable
input is CMOS logic and cannot by left floating.
August 2004
9
MIC2214
MIC2214
Micrel
Adjustable Regulator Design
Input Capacitor
Good bypassing is recommended from input to ground to
help improve AC performance. A 1µF capacitor or greater
located close to the IC is recommended.
Bypass Capacitor
The internal reference voltage of the MIC2214 can be bypassed with a capacitor to ground to reduce output noise and
increase power supply rejection (PSRR). A quick-start feature allows for quick turn-on of the output voltage regardless
of the size of the capacitor. The recommended nominal
bypass capacitor is 0.01µF, but it can be increased without
limit.
Output Capacitor
Each regulator output requires a 1µF ceramic output capacitor for stability. The output capacitor value can be increased
to improve transient response, but performance has been
optimized for a 1µF ceramic type output capacitor.
X7R/X5R dielectric-type ceramic capacitors are recommended because of their temperature performance. X7Rtype 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.
MIC2214
VOUT1
VOUT2
R1
R1
ADJ1
R2
ADJ2
GND
R2
MIC2214 Adjustable Regulator Design
The MIC2214 allows the programming of the output voltages
1 and 2 anywhere between 1.25V and 5.5V, the maximum
operating rating of the part. Two resistors are required for
each output. Appropriate resistor values are required to
prevent the low quiescent current performance being compromised. Resistor values recommended are between 100kΩ
and 500kΩ.
The resistor values are calculated by:
V

R1 = R2 OUT − 1
 1.250 
where VOUT is the desired output voltage. Calculate separately for each output.
10
August 2004
MIC2214
Micrel
Package Information
0.85 +0.15
—0.05
1.60 +0.15
—0.15
3.00 BSC.
0.80 +0.15
—0.15
1.50 BSC.
0.01 +0.04
—0.01
0.48 typ.
PIN 1 ID
0.23 +0.07
—0.05
1
1
1.50 BSC.
+0.15
2 1.15 —0.15
2
3.00 BSC.
3
2.30 +0.15
—0.15
3
0.20 dia
0.50 BSC.
0.40 +0.15
—0.05
TOP
SEATING PLANE
BOTTOM
TERMINAL TIP
0.23 +0.07
—0.05
0.01 +0.04
—0.01
0.50 BSC.
0.50 BSC.
TERMINAL TIP
ODD TERMINAL SIDE
EVEN TERMINAL SIDE
10-Lead MLF™ (ML)
0.90
—
4.00 BSC
0.70
—
3.75 BSC
0.00
0.05
0.20 REF
1
2
3
3.75 BSC 4.00 BSC
SEATING PLANE
12°
TOP VIEW
0.60
0.24
PIN 1 ID
0.20 R.
2.45
2.15
2.45
2.15
0.50
0.30
0.30
0.18
0.65 BSC.
BOTTOM VIEW
16-Lead MLF™ (ML)
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The information furnished by Micrel in this datasheet 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 into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
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© 2004 Micrel, Incorporated.
August 2004
11
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