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参数资料
| 型号： | FAN2002MPX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1A 6MLP |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.3MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-MLP |
| 包装： | 标准包装 |
| 供应商设备封装： | 6-MLP（3x3） |
| 产品目录页面： | 1214 (CN2011-ZH PDF) |
| 其它名称： | FAN2002MPXDKR |
April 2005
FAN2001/FAN2002
1A High-Ef?ciency Step-Down DC-DC Converter
Features
Description
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96% Ef?ciency, Synchronous Operation
Adjustable Output Voltage Options from 0.8V to V IN
2.5V to 5.5V Input Voltage Range
Up to 1A Output Current
Fixed Frequency 1.3MHz PWM Operation
High Ef?ciency Power Save Mode
100% Duty Cycle Low Dropout Operation
Soft Start
Output Over-Voltage Protection
Dynamic Output Voltage Positioning
25 μ A Quiescent Current
Thermal Shutdown and Short Circuit Protection
Pb-Free 3x3mm 6-Lead MLP Package
Designed for use in battery-powered applications, the FAN2001/
FAN2002 is a high-ef?ciency, low-noise synchronous PWM cur-
rent mode and Pulse Skip (Power Save) mode DC-DC con-
verter. It can provide up to 1A of output current over a wide input
range from 2.5V to 5.5V. The output voltage can be externally
adjusted over a wide range of 0.8V to 5.5V by means of an
external voltage divider.
At moderate and light loads, pulse skipping modulation is used.
Dynamic voltage positioning is applied, and the output voltage is
shifted 0.8% above nominal value for increased headroom dur-
ing load transients. At higher loads the system automatically
switches over to current mode PWM control, operating at 1.3
MHz. A current mode control loop with fast transient response
ensures excellent line and load regulation. To achieve high ef?-
ciency and ensure long battery life, the quiescent current is
reduced to 25μA in Power Save mode, and the supply current
Applications
drops below 1μA in shut-down mode. The FAN2001/FAN2002 is
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Pocket PCs, PDAs
Cell Phones
Battery-Powered Portable Devices
Digital Cameras
Hard Disk Drives
Set-Top-Boxes
Point-of-Load Power
Notebook Computers
available in a 3x3mm 6-lead MLP package.
■ Communications Equipment
Typical Application
C IN
10 μ F
V IN
PGND
EN
1
2
3
P1
(AGND)
6
5
4
SW
3.3 μ H
NC
FB
R1
R2
5K ?
10K ?
V OUT
1.2V (1A)
C OUT
2 x 10 μ F
V OUT
1.2V (1A)
R2 10K ?
R1 5K ?
L1
3.3 μ H
2 x 10 μ F
FB
PGND
SW
1
2
3
P1
(AGND)
6
5
4
EN
V IN
PV IN
10 μ F
FAN2001
Figure 1. Typical Application
FAN2002
FAN2001/FAN2002 Rev. 1.0.2
?2005 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
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