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参数资料
| 型号： | FAN5903UCX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 6/19页 |
| 文件大小： | 0K |
| 描述： | IC CONV BUCK W/BYPASS 9-WLCSP |
| 标准包装： | 3,000 |
| 应用： | 转换器，3G RF 功率放大器 |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 0.4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 9-UFBGA，WLCSP |
| 供应商设备封装： | * |
| 包装： | 带卷 (TR) |
Electrical Characteristics
V IN = V OUT + 0.6 V, I OUT = 200 mA, EN = V IN , T A = -40°C to +85°C, unless otherwise noted. Typical values are at
T A = +25°C, V IN = 3.7 V.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
Timings
t SS ?
Startup Time
V IN = 3.7 V, V OUT from 0 V to
3.1 V, C OUT = 4.7 μF, 10 V,
30
40
μs
X5R
Consecutive Current Limits
t SP_en ?
t SP_ex ?
t DC-DC_TR ?
t DC-DC_TF ?
t DC-DC_CL ?
t DCDC_CLR
Sleep Mode Enter Time
Sleep Mode Exit Time
V OUT Step Response Rise Time (3)
V OUT Step Response Fall Time (3)
Maximum Allowed Time for
Consecutive Current Limit
Recovery Time (3)
V CON < 50 mV
V CON ≥ 135 mV
V OUT from 5% to 95%,
? V OUT < 2 V (1.4 V – 3.4 V) ,
R LOAD ≤ 7 ?
V OUT from 95% to 5%,
? V OUT < 2 V (3.4 V – 1.4 V),
R LOAD ≤ 7 ?
40
11
40
180
10
12
μs
μs
μs
μs
μs
μs
Notes:
3.
4.
5.
Guaranteed by design; not tested in production.
Bypass FET resistance does not include the PFET R DSON and inductor DCR in parallel with the bypass FET in
Bypass Mode.
Protects part under short circuit conditions. After 40 μs, operation halts and restarts after 180 μs. Under heavy
capacitive loads, V CON slew rate may be reduced to avoid consecutive current limits. Under typical conditions for
a 3 V change at the output, a capacitive only load of up to 40 μF is supported, assuming a step at the V CON input.
? 2008 Fairchild Semiconductor Corporation
FAN5903 ? Rev. 1.0.9
6
www.fairchildsemi.com
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