MIC5374 Datasheet, PDF (3/22 Pages) Micrel Semiconductor – Triple 200mA μCap LDO and 1mA RTC LDO in 2.5mm x 2.5mm Thin MLF®

Micrel, Inc.
MIC5374/84
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
HS Pad
Pin Name
OUT1
INLDO1/2
OUT2
BIAS
POR_IN
POR
DLY
MR
OUT4
INLDO4
INLDO3
OUT3
GND
EN3 or
/EN3
EN2 or
/EN2
EN1 or
/EN1
EPAD
Pin Function
Regulator Output - LDO1.
Supply Input (LDO1/2).
Regulator Output – LDO2.
Internal Bias Supply Voltage. Must be de-coupled to ground with a 0.1µF capacitor.
Input to POR. Connect directly to output voltage or input voltage that is to be monitored for a 0.9V
reference, or connect a resistor divider network to this pin to program the POR monitoring voltage.
Power-on Reset Output. Open drain.
POR Delay Capacitor. Connect capacitor to ground to set POR delay time.
Manual Reset Input. Manually resets output of POR and delay generator. Do not leave floating.
Regulator Output - LDO4.
Supply Input (LDO4). Ultra-low I_Q RTC LDO. 1.7V to 5.5V input voltage range.
Supply Input (LDO3).
Regulator Output – LDO3.
Ground.
LDO3 Enable Input. EN (MIC5374): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5384): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO2 Enable Input. EN (MIC5374): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5384): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
LDO1 Enable Input. EN (MIC5374): Active High Input. Logic High = On; Logic Low = Off;
/EN (MIC5384): Active Low Input. Logic High = Off; Logic Low = On; Do not leave floating.
Exposed Heat Sink Pad. Connect to GND.
July 2010
3
M9999-070110