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PAM2308 (Obsolete)

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

Datasheet

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Description

The PAM2308 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 PAM2308 provides a powersaving Pulse- Skipping Modulation (PSM) mode to reduce quiescent current under light load operation. The PAM2308 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 0.1μA. Other key features include under-voltage lockout to prevent deep battery discharge.

Application(s)

Cellular Phone

Portable Electronics

Personal Information Appliances

Wireless and DSL Modems

MP3 Players

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)	0.6
Output Current (mA)	1
Output Current (A)	1
Output Voltage (V)	ADJ(0.6 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

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2512	2021-04-16	2021-07-16	Qualified Additional Assembly & Test (A/T) Site