参数资料
型号: FAN2108EMPX
厂商: Fairchild Semiconductor
文件页数: 5/14页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 8A 25MLP
标准包装: 1
系列: TinyBuck™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.8 V ~ 19 V
输入电压: 3 V ~ 24 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 600kHz
电流 - 输出: 8A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 25-MLP
包装: 标准包装
供应商设备封装: 25-MLP(5x6)
其它名称: FAN2108EMPXDKR
FAN2108EMPXDKR-ND
FAN2108EMPXFSDKR
Electrical Specifications
Electrical specifications are the result of using the circuit shown in Figure 1 unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ. Max. Unit
Power Supplies
I CC
V CC Current
SW=Open, FB=0.7 V, V CC =5 V,
f SW =600 KHz
Shutdown: EN=0, V CC =5 V
8
7
12
10
mA
μA
V UVLO
V CC UVLO Threshold
Rising V CC
Hysteresis
4.1
4.3
300
4.5
V
mV
Oscillator
Minimum On-Time
f
t ON
V RAMP
t OFF
Frequency
(2)
Ramp Amplitude, peak-to–peak
Minimum Off-Time (2)
R T =50 K Ω
R T =24 K Ω
16 V IN , 1.8 V OUT , R T =30 K Ω ,
R RAMP =200 K Ω
255
540
300
600
50
0.53
100
345
660
65
150
KHz
KHz
ns
V
ns
Reference
V FB
Reference Voltage (see Figure 4 for
Temperature Coefficient)
FAN2108MPX, 25°C
FAN2108EMPX, 25°C
794
795
800
800
806
805
mV
mV
Error Amplifier
G
DC Gain (2)
80
85
dB
Gain Bandwidth Product
BW
V COMP
I SINK
I SOURCE
(2)
Output Voltage
Output Current, Sourcing
Output Current, Sinking
V CC =5 V
V CC =5 V, V COMP =2.2 V
V CC =5 V, V COMP =1.2 V
12
0.4
1.5
0.8
15
2.2
1.2
3.2
MHz
V
mA
mA
I BIAS
FB Bias Current
V FB =0.8 V, 25°C
-850
-650
-450
nA
Protection and Shutdown
I LIM
I ILIM
T TSD
T HYS
V OVP
V UVLO
V FLT
V FLT_HYS
Current Limit
I LIM Current
Over-Temperature Shutdown
Over-Temperature Hysteresis
Over-Voltage Threshold
Under-Voltage Shutdown
Fault Discharge Threshold
Fault Discharge Hysteresis
R ILIM Open at 25°C (see Circuit
Description)
Internal IC Temperature
Two Consecutive Clock Cycles
16 Consecutive Clock Cycles
Measured at FB Pin
Measured at FB Pin (V FB ~500 mV)
12
-11
110
68
15
-10
+155
+30
115
73
250
250
18
-9
121
78
A
μA
°C
°C
%V OUT
%V OUT
mV
mV
Soft-Start
t SS
t EN
V OUT to Regulation (T0.8)
Fault Enable/SSOK (T1.0)
Frequency=600 KHz
5.3
6.7
ms
ms
Note:
2. Specifications guaranteed by design and characterization; not production tested.
? 2008 Fairchild Semiconductor Corporation
FAN2108 ? Rev. 1.0.2
5
www.fairchildsemi.com
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