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PAM2322AGEAR (Obsolete)

Dual High-Efficiency PWM Step-Down DC-DC Converter

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Description

The PAM2322AGEAR is a dual step-down current-mode, DC-DC converter. At heavy load, the constant-frequency PWM control performs with excellent stability and transient response. To ensure the longest battery life in portable applications, the PAM2322AGEAR provides a power-saving Pulse-Skipping Modulation (PSM) mode to reduce quiescent current under light load operation

The PAM2322AGEAR supports a range of input voltages from 2.7V to 5.5V, allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/NiMH cell, USB, and other standard power sources. Output 1 is a 1.8V fixed output. Output 2 is adjustable from 0.9V to VIN. Both outputs employ an internal power switch and synchronous rectifier to minimize external part count and realize high efficiency.

Output 1 delivers up to 1000mA output current while output 2 delivers up to 2000mA. Each regulator has an independent enable pin.

Each output of the PAM2322AGEAR can be disabled when a logic low is applied to the channel enable pin. 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, soft-start, hiccup mode short circuit protection and thermal shutdown.

Application(s)

Portable Electronics
Personal Information Appliances
Wireless and DSL Modems

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
Efficiency (%)	95
Frequency Typ (Hz)	1200
Frequency Typ (kHz)	1200
HS RDS(ON) (mΩ)	50
HS RDS(ON) (mΩ)	50
LS RDS(ON) (mΩ)	40
LS RDS(ON) (mΩ)	40
MaximumInput Voltage (V)	5.5
Maximum Input Voltage (V)	5.5
Maximum Output Voltage (V)	ADJ
MinimumInput Voltage (V)	2.7
Minimum Input Voltage (V)	2.7
Minimum Output Voltage (V)	1.8
Output Current (mA)	2, 1
Output Current (A)	2, 1
Output Voltage (V)	ADJ, 1.8
Quiescent Current Typ (mA)	0.06
Quiescent Current Typ (µA)	60
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-2427	2019-10-15	2020-04-15	Device End of Life (EOL)