MIC2810_08 Datasheet, PDF (3/18 Pages) Micrel Semiconductor – Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs

Micrel, Inc.
Pin Configuration
MIC2810
16-Pin 3mm x 3mm MLF^® (ML)
Pin Description
Pin Number Pin Name
1
/LOWQ
2
BIAS
3
SGND
4
PGND
5
SW
6
VIN
7
VIN2
8
LDO2
9
LDO
10
VIN1
11
LDO1
12
POR
13
CSET
14
EN1
15
EN
16
EN2
Pin Function
LOWQ Mode. Active Low Input. Logic High = Full Power (Normal) Mode;
Logic Low = LOWQ Mode; Do not leave floating.
Internal circuit bias supply. It must be de-coupled to signal ground with a 0.1µF
capacitor and should not be loaded.
Signal ground.
Power ground.
Switch: Internal power MOSFET output switches.
Supply Input – DC/DC and other circuitry shared with LDO1 and LDO2. Must be
connected to PIN 7.
Supply Input – LDO2. Must be connected to PIN 6.
Output of LDO2
LDO Output: Connect to V_OUT of the DC/DC for LOWQ mode operation.
Supply Input – LDO1.
Output of LDO1
Power-On Reset Output: Open-drain output. Active low indicates an output
undervoltage condition on either one of the three regulated outputs.
Delay Set Input: Connect external capacitor to GND to set the internal delay for the
POR output. When left open, there is minimum delay. This pin cannot be grounded.
Enable Input (LDO 1). Active High Input. Logic High = On; Logic Low = Off; Do not
leave floating
Enable Input (DC/DC). Active High Input. Logic High = On; Logic Low = Off; Do not
leave floating.
Enable Input (LDO 2). Active High Input. Logic High = On; Logic Low = Off; Do not
leave floating
February 2008
3
M9999-022008-C