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PDF AP1605 Data sheet ( Hoja de datos )
| Número de pieza | AP1605 | |
| Descripción | PWM/PFM Dual-mode Step-Down Switching Regulator | |
| Fabricantes | Anachip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP1605 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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PWM/PFM Dual-mode Step-Down Switching Regulator
AP1605
Features
- Low current consumption:
In operation: 100µA max.
Power off: 2µA max.
- Input voltage: 2.5V to 7V.
Adjustable version (+2.5%)
- PWM/PFM dual Mode
- Oscillation frequency: 300KHz (Typ.)
- With a power-off function.
- Built-in internal SW P-channel MOS
- SOP-8L/TSSOP-8L Package.
Applications
- On-board power supplies of battery devices for
portable telephones, electronic notebooks, PDA,
and other hand-held sets.
- Power supplies for audio equipment, including
portable CD players and headphone stereo
equipment.
- Fixed voltage power supply for cameras, video
equipment and communications equipment.
- Power supplies for microcomputers.
- Conversion from four Ni-H or Ni-Cd cells or two
lithium-ion cells to 3.3V/3V.
- Conversion of AC adapter input to 5V/3V.
Pin Assignments
FB 1
CE 2
Vcc 3
PVcc 4
AP1605
SOP-8L
8 Vss
7 Vss
6 SW
5 SW
Vss 1
8 SW
CE 2
7 PVcc
AP1605
CE 3
6 PVcc
FB 4
5 Vcc
TSSOP-8L
General Description
AP1605 consists of CMOS step-down switching
regulator with PWM/PFM dual mode control. These
devices include a reference voltage source, oscillation
circuit, error amplifier, internal PMOS and etc.
AP1605 provides low-ripple power, high efficiency,
and excellent transient characteristics. The
PWM/PFM control circuit is able to very the duty ratio
linearly 0%~0.25% (PFM) and 25%~100% (PWM).
With the addition of an internal P-channel Power MOS,
a coil, capacitors, and a diode connected externally,
these ICs can function as step-down switching
regulators. They serve as ideal power supply units for
portable devices when coupled with the SOP–8L
mini-package, providing such outstanding features as
low current consumption. Since this converter can
accommodate an input voltage of up to 7V, it is also
ideal when operating via an AC adapter.
Pin Descriptions
Pin Pin No.
Name SOP TSSOP
Description
FB 1
4 Feedback pin
Chip Enable:
CE 2 2、3 H: Enable
L: Disable
IC signal power supply pin,
Vcc 3
5
add a 10Ω resistor to PVcc
and a 0.1µF capacitor to
GND.
PVcc 4 6、7 IC power supply pin
Switch Pin. Connect external
SW 5、6
8
inductor/diode here.
Minimize trace area at this
pin to reduce EMI.
Vss 7、8 1 GND Pin
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. 1.1 Jan 18, 2005
1/6
1 page  
PWM/PFM Dual-mode Step-Down Switching Regulator
Marking Information
8
( Top View )
5
AP1605
YY WW X X
14
SOP-8L/TSSOP-8L
Package Information
Package Type: SOP-8L
Logo
Part no.
Blank : normal
L : Lead Free Package
ID code: internal
Xth week: 01~52
Year: "01" =2001
"02" =2002
AP1605
D
7 (4X)
L
VIEW "A"
0.015x45 7 (4X)
eB
y
Symbol
A
A1
A2
B
C
D
E
e
H
L
y
θ
Dimensions In Millimeters
Min.
Nom.
Max.
1.40 1.60 1.75
0.10 − 0.25
1.30 1.45 1.50
0.33 0.41 0.51
0.19 0.20 0.25
4.80 5.05 5.30
3.70 3.90 4.10
− 1.27 −
5.79 5.99 6.20
0.38 0.71 1.27
− − 0.10
0O − 8O
Anachip Corp.
www.anachip.com.tw
5/6
VIEW "A"
Dimensions In Inches
Min.
Nom.
Max.
0.055
0.063
0.069
0.040
0.051
−
0.057
0.100
0.059
0.013
0.016
0.020
0.0075
0.008
0.010
0.189
0.199
0.209
0.146
0.154
0.162
−
0.228
0.050
0.236
−
0.244
0.015
0.028
0.050
− − 0.004
0O − 8O
Rev. 1.1 Jan 18, 2005
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AP1605.PDF ] | |
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