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PAM2306EN1YPBE Datasheet(PDF) 1 Page - Power Analog Micoelectronics |
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PAM2306EN1YPBE Datasheet(HTML) 1 Page - Power Analog Micoelectronics |
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1 / 15 page  PAM2306 Dual High-Efficiency PWM Step-Down DC-DC Coverter 1 , Power Analog Microelectronics Inc www.poweranalog.com 07/2008 Rev 1.0 Features Applications General Description n 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 RoHS Compliant Cellular Phone Portable Electronics Personal Information Appliances Wireless and DSL Modems MP3 Players The PAM2306 is a dual step-down current-mode, DC-DC converter. At heavy load, the constant- frequency PWM control performs 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 for 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 0.1 A. Other key features include under-voltage lockout to prevent deep battery discharge. n n n n n n n n n n n n n n n Pb-Free Package and μ Typical Application ( ) Rx2 Rx1 1 V V REF OUTx + = EN2 NC2 FB2 VIN2 LX2 FB1 PAM2306 1 2 49 10 11 GND LX1 GND 8 5 NC1 3 12 VOUT2 L2 10 F μ CIN2 100 pF VIN1 7 6 EN1 VIN1 4 .7μF L1 R22 47μF VOUT1 100 pF 10 F μ R12 VIN2 C Fw1 COUT1 CIN1 COUT2 C FW2 R11 R21 Figure 1. Adjustable Voltage Regulator |
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