Micrel, Inc.
MIC2810
Pin Configuration
®
16-Pin 3mm x 3mm MLF (ML)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
/LOWQ
BIAS
SGND
PGND
SW
VIN
VIN2
LDO2
LDO
VIN1
LDO1
POR
CSET
EN1
EN
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
April 2007
3
M9999-041107-B
MICREL [ MICREL SEMICONDUCTOR ]
