AT1396B

Features:

• 95% Efficient possible DC/DC Converter
• Combine Step-Up and Step-Down for 90% Efficient Boost-Buck
• Bulit-in LED Driver and Open LED Overvoltage Protection
• Transformerless Inverting Controller for CCD Bias
• 2 Channel Built-in MOSFET Current- Mode PWM and 4 Channel Extra PWM Controllers (CH-3 Synchronous Output)
• Up to 1MHz Operating Frequency
• Shutdown Current <1uA
• Built-in Soft-Start Function
• Built-in Short-Circuit Protection Function
• QFN48 Package



Pinout

Specifications

Item	Symbol	Ratings	Units
Storage temperature	TSTG	-55~ 150
Operating temperature	TOPR	-30~ 85
PVCC1,PVCC2,PVCC3,PVCC 4 input voltage		-0.3~ 5.5	V
LXU,LXD, OUT3M,OUT3S input voltage	VLX/OUT	-0.3V~+5.5	V
Other input Pin		-0.3V~+5.5	V
LXU Current		3.6	A
LXD Current		2.25	A
OUT3M,OUT3S Current		200	mA
Power consumption	Pd	1000	mW
ESD Classification		2	KV

Description

    The AT1396A/B/C/D provide a complete power supply solution for digital cameras. AT1396B improve performance, component count, and size compared to other multi-channel controllers in 2-cell AA, 1-cell Li-Ion, and dual-battery designs. On-chip MOSFETs provide up to 92~95% efficiency for critical power supplies,while additional channels operate with external FETs for optimum design flexibility. All channels DC/DC operate at one fixed frequency settable from 100KHz to 1MHz to optimize size, cost, and efficiency.