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PAM2306 Datasheet

DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER

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A Product Line of
Diodes Incorporated
PAM2306
DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER
Description
The PAM2306 is a dual step-down current-mode, DC-DC converter.
At heavy load, the constant frequency PWM control provides
excellent stability and transient response. To ensure the longest
battery life in portable applications, the PAM2306 provides a power -
saving Pulse-Skipping Modulation (PSM) mode to reduce quiescent
current under light load operation.
The PAM2306 supports a range of input voltages from 2.5V to 5.5V,
allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/NiMH
cell, USB, and other standard power sources. The dual output
voltages are available for 3.3V, 2.8V, 2.5V, 1.8V, 1.5V, 1.2V or
adjustable. All versions employ internal power switch and
synchronous rectifier to minimize external part count and realize high
efficiency. During shutdown, the input is disconnected from the output
and the shutdown current is less than 0.1A. Other key features
include under-voltage lockout to prevent deep battery discharge.
Pin Assignments
Features
Efficiency up to 96%
Only 40μA (typ per channel) Quiescent Current
Output Current: Up to 1A per Channel
Internal Synchronous Rectifier
1.5MHz Switching Frequency
Soft Start
Under-Voltage Lockout
Short Circuit Protection
Thermal Shutdown
Small 12L WDFN3x3 Package
Pb-Free Package and RoHS Compliant
Applications
Cellular Phone
Portable Electronics
Personal Information Appliances
Wireless and DSL Modems
MP3 Players
Typical Applications Circuit
PAM2306
Document number: DS36392 Rev. 1 - 2
V
OUT
VREF1
Rx1
Rx2

Figure 1. Adjustable Voltage Regulator
1 of 15
www.diodes.com
November 2012
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

PAM2306 Datasheet

DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER

No Preview Available !

Typical Applications Circuit
A Product Line of
Diodes Incorporated
PAM2306
VOUT = 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.3V
Figure 2. Fixed Voltage Regulator
Pin Descriptions
Pin Number
1
2
3, 9
Exposed Pad
4
5, 11
6
7
8
10
12
Pin Name
WDFN3x3-12L
VIN2
LX2
GND
FB1
NC1, NC2
EN1
VIN1
LX1
FB2
EN2
Function
Power Input of Channel 2.
Pin for Switching of Channel 2.
Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum
power dissipation.
Feedback of Channel 1.
No Connection
Chip Enable of Channel 1 (Active High). VEN1 VIN1.
Power Input of Channel 1.
Pin for Switching of Channel 1.
Feedback of Channel 2.
Chip Enable of Channel 2 (Active High). VEN2 VIN2.
PAM2306
Document number: DS36392 Rev. 1 - 2
2 of 15
www.diodes.com
November 2012
© Diodes Incorporated


Part Number PAM2306
Description DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER
Maker Diodes
Total Page 15 Pages
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