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MIC37501_11 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – 5A, Low Voltage μCap LDO Regulator
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Micrel, Inc.
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ................................................. 6.5V
Enable Input Voltage (VEN) ....................................... 6.5V
Power Dissipation(PD) .......................... Internally Limited
Junction Temperature(TJ) ............... –40°C ≤ TJ ≤ +125°C
Storage Temperature(TS) ............... –65°C ≤ TJ ≤ +150°C
Lead Temperature (soldering, 5 sec.) ....................260°C
ESD Rating(3)...............................................................2kV
MIC37501/37502
Operating Ratings(2)
Supply Voltage (VIN) ......................................... 2.3V to 6.0V
Enable Input Voltage (VEN) .................................. 0V to 6.0V
Junction Temperature Range(TJ) ....... –40°C ≤ TJ ≤ +125°C
Maximum Power Dissipation .....................................Note 4
Package Thermal Resistance
S-Pak(θJA) ......................................................... 38°C/W
S-Pak(θJC) ........................................................... 2°C/W
TO-263(θJA).................................................... 26.2°C/W
TO-263(θJC)......................................................... 2°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
Condition
Min
Typ Max Units
Output Voltage Accuracy
IL = 10mA
–1
10mA < IOUT < IL(max), VOUT + 1 ≤ VIN ≤ 6V
–2
+1
%
+2
%
Output Voltage Line Regulation
Output Voltage Load Regulation
VIN – VOUT, Dropout Voltage(6)
Ground Pin Current(7)
Ground Pin Current in Shutdown
VIN = VOUT +1.0V to 6.0V
IL = 10mA to 5A
IL = 2.5A
IL = 5A
IL = 5A
VIL < 0.5V, VIN = VOUT + 1V
0.06 0.5
%
0.2
1
%
350
mV
330
500
mV
57
100
mA
1.0
µA
Current Limit
Start-up Time
VOUT = 0
VEN = VIN, IOUT = 10mA, COUT = 100µF
5
7.5
11
A
170
500
µs
Enable Input
Enable Input Threshold
Regulator enable
2.25
V
Regulator shutdown
0.8
V
Enable Pin Input Current
VIL < 0.8V (Regulator shutdown)
2
µA
4
µA
VIH > 2.25V (Regulator enabled)
1
15
30
µA
75
µA
Flag Output
IFLG(LEAK)
VFLG(LO)
VOH = 6V
VIN = 2.25V, IOL = 250µA(8)
1
µA
2
µA
210
400
mV
500
mV
VFLG
Low threshold, % of VOUT below nominal
93
%
Hysteresis
2
%
High threshold, % of VOUT below nominal
99.2
%
MIC37502 Only
Reference Voltage
1.228 1.240 1.252
V
1.215
1.265
V
Adjust Pin Bias Current
40
80
nA
120
nA
May 2011
3
M9999-050511-B
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