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参数资料
| 型号： | FAN4855MTCX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC ADJ 0.5A 8TSSOP |
| 产品变化通告： | Product Discontinuation 03/Dec/2009 |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 3 V ~ 5 V |
| 输入电压： | 1.6 V ~ 4.5 V |
| 电流 - 输出： | 500mA |
| 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： | 8-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-TSSOP |
Recommended Operating Conditions
Parameter
Ambient Temperature Range
V IN Operating Range
V OUT Operating Range
Min.
-40
1.6
3.0
Max.
+85
0.9 V OUT
5.0
Units
°C
V
V
Electrical Characteristics
Unless otherwise speci?ed, V IN = 1.6V to 3V, I LOAD = 1mA, T A = -40°C to +85°C. Test Circuit Fig.1. Typical values are at
T A = +25°C
Parameter
Start Up Voltage
Operating Voltage
Output Voltage
Output Voltage Adjust Range
Steady State Output Current
Pulse Width
Conditions
I LOAD < 1mA
After start I LOAD =10mA, V OUT = 3.3V or 5V
V OUT (nom.) = 3.3V (Note 1)
V OUT (nom.) = 5V
V OUT = 3.3V, V IN = 2.5V
V OUT = 5V, V IN = 2.5V
V IN = 3V
V IN = 2.4V
V IN = 1.8V
V IN = 1.6V
Min.
3.15
4.775
3
300
200
0.8
1.2
1.6
1.7
Typ.
1.35
1.0
3.3
5
500
330
1.4
1.7
2.2
2.5
Max.
1.6
3.45
5.225
5
2
2.5
3.3
4.0
Units
V
V
V
V
V
mA
mA
μ s
μ s
μ s
μ s
Minimum Off-Time
1
μ s
Line Regulation
Load Regulation
I OUT = 2mA, V OUT = 3.3V
V OUT = 5V
0 to 250mA, V IN = 2.4V, V OUT = 3.3V
0.5
0.5
0.5
2
2
%
%
%
Feedback Voltage (VFB)
LBI Threshold Voltage
LBI Hysteresys
0 to 150mA, V IN = 2.4V, V OUT = 5V
1
1.243
0.390
25
%
V
V
mV
Internal NFET, PFET ON Resist.
Power Ef?ciency
I LOAD = 100mA
I LOAD = 200mA, V IN = 3V, V OUT = 3.3V
0.35
95
?
%
Input Current in Shut Down Mode
Quiescent Current
SHDN = 0V, V IN = 3V (Note 2)
SHDN = 3V, V IN = 3V, V OUT = 3.3V
8
80
50
160
μ A
μ A
(Note 2)
LBO Output Voltage Low
SHDN Input Threshold Voltage
SHDN Input Threshold Voltage
V LBI = 0, I SINK = 1mA
V IN = 3V, V OUT = 3.3V/5V
V IN = 1.6V, V OUT = 3.3V/5V
0.2
1.5
0.8
V
V
V
Notes:
1. R4, R5, R6 tolerance ≤ 0.1%.
2. Current through R1, R2 is not taken into account.
FAN4855 Rev. 1.0.1
3
www.fairchildsemi.com
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