MIC37151 Datasheet PDF - MICREL

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MIC37151
MICREL

Part Number MIC37151
Description 1.5A / Low Voltage uCap LDO Regulator
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MIC37150/51/52/53
1.5A, Low Voltage µCap LDO Regulator
General Description
The Micrel MIC37150/51/52/53 is a 1.5A low-dropout
linear voltage regulator that provides a low voltage, high
current output with a minimum of external components. It
offers high precision, ultra-low dropout (500mV over
temperature), and low ground current.
The MIC37150/51/52/53 operates from an input of 2.25V
to 6.0V. It is designed to drive digital circuits requiring low
voltage at high currents (i.e., PLDs, DSPs, micro-
controllers, etc.). It is available in xed and adjustable
output voltages. Fixed voltages include 1.5V, 1.65V, 1.8V,
2.5V and 3.3V. The adjustable version is capable of
supplying output voltages from 1.24V to 5.5V.
Features of the MIC37150/51/52/53 LDO include thermal
and current limit protection, and reverse current and
reverse battery protection. Logic enable and error ag pins
are available.
Junction temperature range of the MIC37150/51/52/53 is
from –40°C to +125°C.
For applications requiring input voltage greater than 6.0V,
see MIC3910x, MIC3915x, MIC3930x, and MIC3950x
LDOs.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
1.5A minimum guaranteed output current
500mV maximum dropout voltage over temperature
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion
Stable with ceramic or tantalum capacitor
Wide input voltage range
– VIN: 2.25V to 6.0V
±1.0% initial output tolerance
Fixed and adjustable output voltages
– MIC37150—3-pin xed voltages
– MIC37151—5-pin S-Pak or 8-pin e-Pad SOIC
xed voltages with flag
– MIC37152—5-pin adjustable voltage
– MIC37153—8-pin adjustable voltage with flag
Excellent line and load regulation specications
Logic controlled shutdown
Thermal shutdown and current limit protection
Reverse-leakage protection
Low prole 3 or 5-pin S-Pak packages or 8-pin e-Pad
SOIC
Applications
LDO linear regulator for low-voltage digital IC
PC add-in cards
High efficiency linear power supplies
SMPS post regulator
Battery charger
Typical Application
VIN = 3.0V
CIN
MIC37151
VIN VOUT
VEN
FLG
GND
www.DataSheet4U.com
100k
VOUT = 2.5V VIN
COUT
47µF, Ceramic
CIN
MIC37152
VIN VOUT
VEN
ADJ
GND
R1
R2
1.3V
COUT
47µF, Ceramic
Fixed 2.5V Regulator with Error Flag
Adjustable Regulator
Super ßeta PNP is a trademark of Micrel, 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
October 2007
M9999-101907



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Micrel, Inc.
MIC37150/51/52/53
Ordering Information
Part Number
Standard
RoHS Compliant* /
Pb-free
Output
Current
MIC37150-1.5BR MIC37150-1.5WR*
1.5A
MIC37150-1.65BR MIC37150-1.65WR*
1.5A
MIC37150-1.8BR MIC37150-1.8WR*
1.5A
MIC37150-2.5BR MIC37150-2.5WR*
1.5A
MIC37150-3.3BR MIC37150-3.3WR*
1.5A
MIC37151-1.5BR MIC37151-1.5WR*
1.5A
MIC37151-1.5YME*
1.5A
MIC37151-1.65BR MIC37151-1.65WR*
1.5A
MIC37151-1.8YME*
1.5A
MIC37151-1.8BR MIC37151-1.8WR*
1.5A
MIC37151-2.5YME**
1.5A
MIC37151-2.5BR MIC37151-2.5WR*
1.5A
MIC37151-3.3BR MIC37151-3.3WR*
1.5A
MIC37152BR
MIC37152WR*
1.5A
MIC37152YM
1.5A
MIC37153YME**
1.5A
* RoHS compliant with ‘high-melting solder’ exemption.
** Contact factory for availablity.
Voltage
1.5V
1.65V
1.8V
2.5V
3.3V
1.5V
1.5V
1.65V
1.8V
1.8V
2.5V
2.5V
3.3V
ADJ
ADJ
ADJ
Junction Temp. Range
Package
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
S-PAK-3
S-PAK-3
S-PAK-3
S-PAK-3
S-PAK-3
S-PAK-5
e-Pad SOIC-8
S-PAK-5
e- Pad SOIC-8
S-PAK-5
e-Pad SOIC-8
S-PAK-5
S-PAK-5
S-PAK-5
SOIC-8
e-Pad SOIC-8
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October 2007
2
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Micrel, Inc.
Pin Configuration
3 VOUT
2 GND
1 VIN
S-PAK-3 (R)
EN 1
VIN 2
VOUT 3
ADJ 4
8 GND
7 GND
6 GND
5 GND
SOIC-8 (M)
MIC37150/51/52/53
5 FLG/ADJ
4 VOUT
3 GND
2 VIN
1 EN
S-PAK-5 (R)
GND 1
EN 2
VIN 3
NC 4
8 FLG
7 VOUT/ADJ
6 VOUT
5 NC
e-Pad SOIC-8 (ME)
Pin Description
Pin Number
S-PAK-3
Pin Number
S-PAK-5
1
Pin Number
SOIC-8
1
Pin Number
e-Pad SOIC-8
2
122
3
2
3 5, 6, 7, 8
1
6, 7 (Fixed)
343
6 (Adj)
–5–
8
47
– – – 4, 5
Pin Name Pin Name
EN
VIN
GND
VOUT
FLG
ADJ
NC
Enable (Input): CMOS compatible input.
Logic high = enable, logic low = shutdown.
Input voltage which supplies current to the output
power device.
Ground (TAB is connected to ground on S-Pak)
Regulator Output
Error Flag (Output): Open collector output.
Active low indicates an output fault condition.
Adjustable regulator feedback input.
Connect to resistor voltage divider.
Not internally connected.
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October 2007
3 M9999-101907



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Micrel, Inc.
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ......................................................6.5V
Enable Input Voltage (VEN)............................................6.5V
Power Dissipation .....................................Internally Limited
Junction Temperature .........................–40°C TJ +125°C
Storage Temperature (Ts) ...................–65°C TJ +150°C
Lead Temperature (soldering, 5sec.)......................... 260°C
EDS Rating................................................................ Note 3
MIC37150/51/52/53
Operating Ratings(2)
Supply voltage (VIN) ....................................... 2.25V to 6.0V
Enable Input Voltage (VEN).................................. 0V to 6.0V
Junction Temperature Range .............–40°C TJ +125°C
Maximum Power Dissipation..................................... Note 4
Package Thermal Resistance
S-Pak (θJC) ..........................................................2°C/W
Power SOIC-8 (θJA) ...........................................63°C/W
e-Pad SOIC-8 (θJC)............................................10°C/W
Electrical Characteristics(5)
TA = 25°C with VIN = VOUT + 1V; VEN = VIN; bold values indicate –40°C < TJ < +125°C, unless otherwise noted.
Parameter
Output Voltage Accuracy
Output Voltage Line Regulation
Output Voltage Load Regulation
VIN – VOUT; Dropout Voltage,
Note 6
Ground Pin Current, Note 7
Ground Pin Current in Shutdown
Current Limit
Start-up Time
Condition
IL = 10mA
10mA < IOUT < IL(max), VOUT + 1 VIN 6V
VIN = VOUT +1.0V to 6.0V
IL = 10mA to 1.5A
IL = 750mA
IL = 1.5A
IL = 1.5A
VIL 0.5V, VIN = VOUT + 1V
VOUT = 0
VEN = VIN, IOUT = 10mA, COUT = 22µF
Min Typ Max
–1 +1
–2 +2
0.06 0.5
0.2 1
350
500
17 30
1.0
2.25 4.0
170 500
Enable Input
Enable Input Threshold
Enable Pin Input Current
Regulator enable
Regulator shutdown
VIL 0.8V (regulator shutdown)
VIH 2.25V (regulator enabled)
2.25
1 15
0.8
2
4
30
75
Flag Output
IFLG(LEAK)
VFLG(LO)
VFLG
VOH = 6V
VIN = 2.25V, IOL = 250µA, Note 8
Low threshold, % of VOUT below nominal
Hysteresis
1
2
210 300
400
93
2
Reference Voltage
High threshold, % of VOUT below nominal
99.2
1.228 1.240 1.252
wwRwe.fDearetanScheeVeto4ltUa.gceomTemp.
Coefficient
Note 9
Note 10
1.215
1.265
20
Adjust Pin Bias Current
Adjust Pin Bias Current Temp.
Coefficient
40 80
120
0.1
Units
%
%
%
%
mV
mV
mA
µA
A
µs
V
V
µA
µA
µA
µA
µA
µA
mV
mV
%
%
%
V
V
ppm/°C
nA
nA
nA/°C
October 2007
4 M9999-101907



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