Micrel, Inc. MIC5248
August 2006
3
M9999-080106
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
).................................... 0V to +7V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Flag Output Voltage (V
PG
) ...................................... 0V to V
IN
Junction Temperature (T
J
) ....................................... +150°C
Storage Temperature (T
S
).........................–65°C to +150°C
Lead Temperature (soldering, 5sec.)......................... 260°C
EDS Rating
(3)
Operating Ratings
(2)
Input Voltage (V
IN
)........................................... +2.7V to +6V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Flag Output Voltage (V
PG
)...................................... 0V to V
IN
Junction Temperature (T
J
) ........................–40°C to +125°C
Thermal Resistance
SOT-23-5 (θ
JA
).................................................235°C/W
MLF-6 (θ
JA
) ......................................................100°C/W
Electrical Characteristics
V
IN
= 2.7V, V
EN
= V
IN
; I
OUT
= 100µA; T
J
= 25°C, bold values indicate –40°C< T
J
< +125°C, unless noted.
Symbol Parameter Condition Min Typ Max Units
V
O
Output Voltage Accuracy IOUT = 100µA –3
–4
3
4
%
%
∆V
LNR
Line Regulation VIN = 2.7V to 6V
–0.3
0
0.3
%/V
∆V
LDR
Load Regulation
IOUT = 0.1mA to 150mA, Note 4
4.0 5.0 %
I
Q
Quiescent Current VEN ≤ 0.4V (shutdown) 0.45
1
µA
IOUT = 0mA; VIN = 6.0V 100 150 µA I
GND
Ground Pin Current, Note 5
IOUT = 150mA; VIN = 6.0V 100 150 µA
PSRR Power Supply Rejection f = 120Hz, COUT = 4.7µF, IOUT = 150mA 60 dB
I
LIM
Current Limit VOUT = 0V 160 350 mA
Enable Input
V
IL
Enable Input Logic-Low Voltage VIN = 5.5V, regulator shutdown
0.4
V
V
IH
Enable Input Logic-High Voltage VIN = 5.5V, regulator enabled
1.6
V
VIL ≤ 0.4V; VIN = 5.5V 0.01 µA I
EN
Enable Input Current
VIH ≥ 1.6V; VIN = 5.5V 0.01 µA
Thermal Protection
Thermal Shutdown Temperature 150 °C
Thermal Shutdown Hysteresis 10 °C
Power Good, Note 6
Low Threshold % of VOUT (PG ON) 89.5 % V
PG
High Threshold % of VOUT (PG OFF) 96.5 %
V
OL
PG Output Logic-Low Voltage IL = 100µA, fault condition 0.02 0.1 V
I
PG
Power Good Leakage Current power good off, VPG = 5.5V 0.01 µA
V
PG
Delay Delay Time to Power Good See “Timing Diagram” 1 5 ms
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended.
4. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the loadrange from
0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
5. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the groundpin
current.
6. The power good is a function of the output voltage being 5% low and the detection of one of the following: overcurrent, over-temperature ordropout.
See “Applications Information” section for additional information.
