MIC2210-1.6YML MICREL [Micrel Semiconductor], MIC2210-1.6YML Datasheet - Page 9

• Manufacturer Part Number: MIC2210-1.6YML
• Description: Dual Cap LDO with Open-Drain Driver
• Manufacturer: MICREL [Micrel Semiconductor]

Functional Diagram
Functional Description
The MIC2210 is a high performance, low quiescent current
power management IC consisting of two µCap low dropout
regulators, an open-drain driver. The first regulator is capable
of sourcing 150mA at output voltages from 1.25V to 5V. The
second regulator is capable of sourcing 300mA of current at
output voltages from 1.25V to 5V. An open-drain driver com-
pletes the power management chipset, offering the capability
of driving LEDs for keypad backlighting in applications such
as cellphones.
Enable 1 and 2
The enable inputs allow for logic control of both output volt-
ages with individual enable inputs. The enable input is active
high, requiring 1.8V for guaranteed operation. The enable
input is CMOS logic and cannot by left floating.
November 2004
CBYP
CBYP
EN1
EN2
EN1
EN2
VIN
VIN
SW
SW
Reference
Reference
MIC2210 Adjustable Voltage Block Diagram
MIC2210 Fixed Voltage Block Diagram
LDO1
LDO1
GND
GND
9
Open-Drain Driver (DRV)
The drive (DRV) pin is an open-drain output capable of sinking
150mA of current. This output is controlled by a logic level
input, the switch (SW) pin. The switch pin is an active high
input and cannot be left floating.
Input Capacitor
Good bypassing is recommended from input to ground to
help improve AC performance. A 1µF capacitor or greater
located close to the IC is recommended.
LDO2
LDO2
Comparator
Comparator
Error
NGND
Error
NGND
OUT1
OUT2
ERR
DRV
OUT1
ADJ1
OUT2
ADJ2
ERR
DRV
MIC2210