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MIC2205 Datasheet(PDF) 2 Page - Micrel Semiconductor

Part # MIC2205
Description  2MHz PWM Synchronous Buck Regulator with LDO Standby Mode
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2205 Datasheet(HTML) 2 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2205
March 2005
2
M9999-031105
www.micrel.com
Ordering Information
Part Number
Output
Voltage
(1)
Junction Temp. Range
Package
Lead Finish
MIC2205YML
Adj.
–40° to +125°C
3x3 MLF-10L
Pb-free
MIC2205-1.58YML
1.58V
–40° to +125°C
3x3 MLF-10L
Pb-free
Note:
1. Other Voltage options available. Contact Micrel for details.
Pin Configuration
3mm x 3mm MLF-10L (ML)
Pin Description
Pin Number
Pin Name
Pin Function
1
AGND
Analog (signal) Ground.
2
LDO
LDO Output (Output): Connect to VOUT for LDO mode operation.
3
BIAS
Internal circuit bias supply. Must be de-coupled to signal ground with a 0.1µF
capacitor and should not be loaded.
4
AVIN
Analog Supply Voltage (Input): Supply voltage for the analog control circuitry and
LDO input power. Requires bypass capacitor to GND.
5
FB
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 VOUT and an internal resistor network sets the output
voltage.
6
EN
Enable (Input). Logic low will shut down the device, reducing the quiescent
current to less than 5µA.
7
_____
LOWQ
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.
8
VIN
Supply Voltage (Input): Supply voltage for the internal switches and drivers.
9
SW
Switch (Output): Internal power MOSFET output switches.
10
PGND
Power Ground.
EP
GND
Ground, backside pad.


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