MIC2205 Datasheet, PDF (2/16 Pages) Micrel Semiconductor – 2MHz PWM Synchronous Buck Regulator with LDO Standby Mode

Micrel, Inc.
MIC2205
Ordering Information
Part Number
Output Voltage⁽¹⁾ Junction Temp. Range
MIC2205-1.3YML
1.3V
–40° to +125°C
MIC2205-1.38YML
1.38V
–40° to +125°C
MIC2205-1.5YML
1.5V
–40° to +125°C
MIC2205-1.58YML
1.58V
–40° to +125°C
MIC2205-1.8YML
1.8V
–40° to +125°C
MIC2205-1.85YML
1.85V
–40° to +125°C
MIC2205YML
Adj.
–40° to +125°C
Note:
1. Other Voltage options available. Contact Micrel for details.
Pin Configuration
Package
3x3 MLF-10L
3x3 MLF-10L
3x3 MLF-10L
3x3 MLF-10L
3x3 MLF-10L
3x3 MLF-10L
3x3 MLF-10L
Lead Finish
Pb-free
Pb-free
Pb-free
Pb-free
Pb-free
Pb-free
Pb-free
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
EP
AGND 1
10 PGND
LDO 2
9 SW
BIAS 3
8 VIN
AVIN 4
FB 5
7 LOWQ
EP
6 EN
3mm x 3mm MLF-10L (ML)
Pin Name
AGND
LDO
BIAS
AVIN
FB
EN
_____
LOWQ
VIN
SW
PGND
GND
Pin Function
Analog (signal) Ground.
LDO Output (Output): Connect to V_OUT for LDO mode operation.
Internal circuit bias supply. Must be de-coupled to signal ground with a 0.1µF
capacitor and should not be loaded.
Analog Supply Voltage (Input): Supply voltage for the analog control circuitry and
LDO input power. Requires bypass capacitor to GND.
Feedback. Input to the error amplifier. For the Adjustable option, connect to the
external resistor divider network to set the output voltage. For fixed output
voltage options, connect to V_OUT and an internal resistor network sets the output
voltage.
Enable (Input). Logic low will shut down the device, reducing the quiescent
current to less than 5µA.
Enable LDO Mode (Input): Logic low enables the internal LDO and disables the
PWM operation. Logic high enables the PWM mode and disables the LDO
mode.
Supply Voltage (Input): Supply voltage for the internal switches and drivers.
Switch (Output): Internal power MOSFET output switches.
Power Ground.
Ground, backside pad.
April 2005
2
M9999-041105
www.micrel.com