AP1601

Features:

-A Guaranteed Start-Up from less than 0.9 V.
-High Efficiency.
-Low Quiescent Current.
-Less Number of External Components needed.
-Low Ripple and Low Noise.
-Space Saving Packages: MSOP-8L and
MSOP-10L.

Application

-Pagers.
-Cameras.
-Wireless Microphones.
-Pocket Organizers.
-Battery Backup Suppliers.
-Portable Instruments.




Pinout






Specifications

Symbol	Parameter	Rating	Unit
VCC	Supply Voltage (OUT to GND)	-0.3 to 8.0	V
VBATT	Battery Voltage (Batt to GND)	-0.3 to 6.0	V
	LBI, REF, FB, CLSEL to GND	-0.3 to VOUT+0.3	V
VSW	Switch Voltage (LX to GND)	-0.3 to VOUT+0.3	V
IOUT	Output Current (OUT)	-1.5 to +1.5	A
VLBO	LBO to GND	6.0	V
ISW	Switch Current (LX)	-1.5 to +1.5	A
TST	Storage Temperature Range	-65 to +150
TOT	Operation Temperature Range	-40 to +80

Part Number	AP1601
Type	Boost
Min and Max Input Voltage (V)	1.1 ~ 5.5
Output Voltage (V)	2 to 5.5 ADJ
Output Current (A)	0.42
Frequency (Hz) typ	100K Max
Efficiency (%)	90
Standby Quiescent Current (uA) typ	0.1

Description

The AP1601 is a high efficiency step-up DC/DC converter for applications using 1 to 4 NiMH battery cells. Only three external components are required to deliver a fixed output voltage of 3.3V or 5V. The AP1601 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output ripple and noise are lower compared with the circuits operating in PSM mode.

The PFM control circuit operating in 100KHz (max.) switching rate results in smaller passive components. The space saving MSOP packages make the AP1601 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones.