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MIC68220 Datasheet, PDF (7/18 Pages) Micrel Semiconductor – Dual 2A LDO Regulator
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Micrel
MIC68220
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .........................................................6V
Enable Input Voltage (VEN)............................. 0 to VIN + 0.3V
POR (VPOR)........................................................... VIN + 0.3V
RC ....................................................................... VIN + 0.3V
Power Dissipation .................................. Internally Limited(3)
Junction Temperature .........................–40°C ≤ TJ ≤ +125°C
Storage Temperature (TS)...................–65°C ≤ TJ ≤ +150°C
ESD Rating(4) ................................................................ 2KV
Operating Ratings(2)
Supply voltage (VIN) ....................................... 1.65V to 5.5V
Enable Input Voltage (VEN)..................................... 0V to VIN
Ramp Control (VRC)............................................. 0V to 5.5V
Junction Temperature Range ............–40°C ≤ TJ ≤ +125°C
Package Thermal Resistance
4x5 MLF-20 (θJA) ..............................................27°C/W
Electrical Characteristics(5)
TA = 25°C with VIN = VOUT + 1V; VEN = VIN; IOUT = 10mA; bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Conditions
Min Typ Max Units
Output Voltage Accuracy
10mA < IOUT < IL(max), VOUT + 1 ≤ VIN ≤ 5.5V
-2
+2
%
Feedback Voltage
Adjustable version only
0.49 0.50 0.51
V
Feedback Current
Adjustable version only
10
nA
Output Voltage Line Regulation VIN = VOUT + 1V to 5.0V
0.06 0.5
V
Output Voltage Load Regulation IL = 10mA to 2A
0.3
1
%
VIN – VO; Dropout Voltage
IL = 500mA
IL = 1.0A
IL = 2.0A
140 250 mV
200 400 mV
300 600 mV
Ground Pin Current
IL = 10mA
IL = 500mA
IL = 1.0A
IL = 2.0A
1.5
mA
7
15
mA
15
30
mA
42
80
mA
Shutdown Current
VEN = 0V; VOUT = 0V
0.01 10
µA
Current Limit
VOUT = 0V; VIN = 3.0V
2.0 3.4 6.0
A
Start-up Time
VEN = VIN; CRC = Open
25
150
µs
Enable Input
Enable Input Threshold
Regulator enable
1
V
Regulator shutdown
0.2
V
Enable Hysteresis
50 100 250 mV
Enable Input Current
POR Output
VIL ≤ 0.2V (Regulator shutdown)
VIH ≥ 1V (Regulator enable)
0.8
µA
2
µA
IPOR(LEAK)
VPOR = 5.5V; POR = High
1
µA
2
µA
VPOR(LO)
Output Logic-Low Voltage (undervoltage condition),
IPOR = 1mA
60
90
mV
VPOR :
VOUT Ramping Up
VOUT Ramping Down
Threshold, % of VOUT below nominal
7.5
10 12.5
%
10 12.5 15
%
Delay Current
VDELAY = 0.75V
0.7
1
1.3
µA
Delay Voltage (Note 6)
VPOR = High
1.185 1.235 1.285 V
December 2006
7
M9999-121406
(408) 955-1690
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