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PAM2309 (Obsolete)

1A STEP-DOWN DC-DC CONVERTER

Datasheet

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Description

The PAM2309 is a 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 PAM2309 provides a power-saving Pulse- Skipping Modulation (PSM) mode to reduce quiescent current under light load operation to save power. The PAM2309 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 output voltage is adjustable from 0.6V to the input voltage. 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 0.1μA. Other key features include under-voltage lockout to prevent deep battery discharge. The PAM2309 is available in TSOT25, DFN2x2-6 Pin and QFN3x3- 16 Pin packages.

Application(s)

Cellular Phone

Portable Electronics

Wireless Devices

Cordless Phone

Computer Peripherals

Battery Powered Widgets

Electronic Scales

Digital Frame

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
Efficiency (%)	96
Frequency Typ (Hz)	1500
Frequency Typ (kHz)	1500
HS RDS(ON) (mΩ)	300
HS RDS(ON) (mΩ)	300
LS RDS(ON) (mΩ)	350
LS RDS(ON) (mΩ)	350
MaximumInput Voltage (V)	5.5
Maximum Input Voltage (V)	5.5
Maximum Output Voltage (V)	VIN
MinimumInput Voltage (V)	2.5
Minimum Input Voltage (V)	2.5
Minimum Output Voltage (V)	0.5
Output Current (mA)	1
Output Current (A)	1
Output Voltage (V)	ADJ(0.5 to VIN)
Quiescent Current Typ (mA)	0.04
Quiescent Current Typ (µA)	40
Shutdown Current Typ (µA)	0.1
Shutdown Current Typ (µA)	0.1
Type	Buck

Technical Documents

Recommended Soldering Techniques

TN1.pdf