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ME2129 Datasheet Preview

ME2129 Datasheet

ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL

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ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL
STEP-UP SWITCHING REGULATOR
Ver 03
ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL
Description
STEP-UP SWITCHING REGULATOR
Feature
The ME2129 series is a CMOS step-up
switching regulator which mainly consists of a
reference voltage source, an oscillation circuit,
an error amplifier, a phase compensation circuit,
a PWM/PFM switching control circuit. With an
external low-ON-resistance Nch Power MOS,
this product is applicable to applications
requiring high efficiency and high output current.
The ME2129 series switches its operation to the
PFM control circuit whose duty ratio is 15 % with
to the PWM/PFM switching control circuit under
a light load and to prevent decline in the
efficiency by IC operation current.
l Low voltage operation: Start-up is guaranteed from
0.9 V(IOUT =1 mA )
l Duty ratio: Built-in PWM/PFM switching control
circuit 15 to 78 % .
l oscillator frequency300KHz
l External parts: coil, diode, capacitor, and transistor
l Output voltage range: 1.5V ~6.5 V
l Output voltage accuracy┬▒2%
l Soft start function: 2 ms.
l PACKAGESOT-23-5
Selection Guide
Typical Application:
l Mobile phones (PDC, GSM, CDMA, IMT200 etc.)
l Bluetooth equipment
l PDA
l Portable communication modem
l Portable games
l Cameras
l Digital cameras
l Cordless phones
l Notebook computers
1/13




Microne

ME2129 Datasheet Preview

ME2129 Datasheet

ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL

No Preview Available !

Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL
STEP-UP SWITCHING REGULATOR
Ver 03
TYPE
POSTFIX
ME2129Cxx
M5
ME2129F
M5
PACKAGE
SOT23-5
SOT23-5
SWITCHING
TRANSISTOR
Build in
Transistor
Build in
Transistor
CE
FUNCTION
Yes
Yes
VDD
FUNCTION
No
Yes
FB
FUNCTION
No
Yes
FEATURES
LX + CE
LX +FB
Pin Configuration
Pin information
SOT-23-5
ME2129Cxx:
Pin Number
SOT-23-5
1
2
3
4
5
Pin
Name
CE
LX
GND
NC
VOUT
Function
Shutdown pin
Swich
GND pin
NC
Output voltage pin
ME2129F:
Pin Number
SOT-23-5
1
2
3
4
5
Pin
Name
CE
LX
GND
VDD
FB
Function
Shutdown pin
Swich
GND pin
IC power supply pin
Feed Back voltage pin
2/13


Part Number ME2129
Description ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL
Maker Microne
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