AP1602
器件资料摘要：
AP1602
Step-Up DC/DC Converter
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.1 Apr. 14, 2004
1/7
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: SOT89-5
Applications
-Pagers.
-Cameras.
-Wireless Microphones.
-Pocket Organizers.
-Battery Backup Suppliers.
-Portable Instruments.
General Description
The AP1602 is a high efficiency step-up DC/DC
converter for applications using 1 to 2 NiMH battery
cells. Only three external components are required
to deliver a fixed output voltage of 3.3V. The
AP1602 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 SOT89-5 packages
make the AP1602 an ideal choice of DC/DC
converter for space conscious applications, like
pagers, electronic cameras, and wireless
microphones.
Pin Assignments
1
2
3 74
5
LX
GND
OUTREF
AP1602A
SHDN
1
2
3 74
5
OUT
GND
LXFB
SOT89-5L
AP1602B
REF
Pin Descriptions
Pin No.Pin
Name A B
Description
REF 1 3
1.2V Reference Voltage. Bypass
with a 0.1µF capacitor.
OUT 5 4
Power Output. OUT provides
bootstrap power to the IC.
LX 4 5
N-Channel and P-Channel Power
MOSFET Drain
GND 2 2 Ground
SHDN
3 -
Shutdown Input. Drive high
(>80% of V
OUT
) for operating
mode. Drive low (<20% of V
OUT
)
for shutdown mode. Connect to
OUT for normal operation.
FB - 1 Feedback pin
Ordering Information
Package
AP1602 X X X X
Packing
Blank : Tube
A : Taping
Y: SOT89-5L
Lead Free
Blank : Normal
L : Lead Free Package
Version
A: A version
B: B version
Step-Up DC/DC Converter
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.1 Apr. 14, 2004
1/7
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: SOT89-5
Applications
-Pagers.
-Cameras.
-Wireless Microphones.
-Pocket Organizers.
-Battery Backup Suppliers.
-Portable Instruments.
General Description
The AP1602 is a high efficiency step-up DC/DC
converter for applications using 1 to 2 NiMH battery
cells. Only three external components are required
to deliver a fixed output voltage of 3.3V. The
AP1602 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 SOT89-5 packages
make the AP1602 an ideal choice of DC/DC
converter for space conscious applications, like
pagers, electronic cameras, and wireless
microphones.
Pin Assignments
1
2
3 74
5
LX
GND
OUTREF
AP1602A
SHDN
1
2
3 74
5
OUT
GND
LXFB
SOT89-5L
AP1602B
REF
Pin Descriptions
Pin No.Pin
Name A B
Description
REF 1 3
1.2V Reference Voltage. Bypass
with a 0.1µF capacitor.
OUT 5 4
Power Output. OUT provides
bootstrap power to the IC.
LX 4 5
N-Channel and P-Channel Power
MOSFET Drain
GND 2 2 Ground
SHDN
3 -
Shutdown Input. Drive high
(>80% of V
OUT
) for operating
mode. Drive low (<20% of V
OUT
)
for shutdown mode. Connect to
OUT for normal operation.
FB - 1 Feedback pin
Ordering Information
Package
AP1602 X X X X
Packing
Blank : Tube
A : Taping
Y: SOT89-5L
Lead Free
Blank : Normal
L : Lead Free Package
Version
A: A version
B: B version