MIC5312 Datasheet, PDF (2/11 Pages) Micrel Semiconductor – LowQ Mode Dual 300mA LDO with Integrated POR

Micrel, Inc.
Ordering Information
Part Number
Output
Voltage*
Junction Temp. Range
Package
MIC5312-GMBML 1.8V/2.8V
–40°C to +125°C
10-Pin 3×3 MLF™
MIC5312-DKBML 1.85V/2.6V
–40°C to +125°C
10-Pin 3×3 MLF™
Note: *Other Voltage options available between 1.25V and 5V. Contact Micrel for details.
MIC5312
Pin Configuration
V_IN 1
EN1 2
EN2 3
LOWQ 4
BYP 5
10 V_OUT1
9 V_OUT2
8 POR
7 SET
6 GND
MIC5312-xxBML (3x3)
Pin Description
Fixed
1
2
Pin Name
V_IN
EN1
3
EN2
4
LowQ™
5
BYP
6
GND
7
SET
8
POR
9
V_OUT2
10
V_OUT1
EP
GND
Pin Function
Supply Input. (V_IN1 and V_IN2 are internally tied together)
Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating
Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating
LowQ™ Mode. Active Low Input. Logic High = Full Power Mode; Logic Low = Light
Load Mode; Do not leave floating.
Reference Bypass: Connect external 0.01µF to GND to reduce output noise. May
be left open.
Ground.
Delay Set Input: Connect external capacitor to GND to set the internal delay for the
POR output. When left open, there is no delay. This pin cannot be grounded. Delay
= 1µs/1pF
Power-On Reset Output: Open-drain output. Active low indicates an output
undervoltage condition on either regulator 1 or regulator 2 when device is enabled.
Output of regulator 2
Output of regulator 1
Ground. Internally connected to the Exposed Pad.
February 2005
2
M9999-021105
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