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参数资料
| 型号： | SI9122EDQ-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM VM 20-TSSOP |
| 标准包装： | 3,000 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 600kHz |
| 占空比： | 95% |
| 电源电压： | 10.5 V ~ 13.2 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 带卷 (TR) |
Si9122E
Vishay Siliconix
SPECIFICATIONS a
Test Conditions
Unless Otherwise Specified
f NOM = 500 kHz, V IN = 75 V
Limits
- 40 to 85 °C
Parameter
Symbol
V INDET = 7.5 V; 10.5 V ≤ V CC ≤ 13.2 V
Min. b
Typ. c
Max. b
Unit
Current Sense Amplifier
Input Voltage CM Range
V CM
V CS1 - GND, V CS2 - GND
± 150
mV
Current Sense Amplifier
Input Amplifier Gain
Input Amplifier Bandwidth
Input Amplifier Offset Voltage
A VOL
BW
V OS
17.5
5
±5
dB
MHz
mV
C L_CONT Current
Lower Current Limit Threshold
Upper Current Limit Threshold
Hysteresis
I CL_CONT
V TLCL
V THCL
dV CS = 0
dV CS = 100 mV
dV CS = 100 mV
I PD = I PU - I CL_CONT = 0
I PD > 2 mA
I PU < 500 μ A
120
0
>2
100
150
- 50
μ A
mA
mV
C L_CONT Clamp Level
C L_CONT
I PU = 500 μ A
0.6
1.5
V
PWM Operation
Duty Cycle
D MAX
D MIN
Primary
f OSC = 500 kHz, 25 °C V EP = 0 V
Secondary
V INDET = 4.8 V, V IN = 48 V
V EP = 1.75 V
V CS2 - V CS1 > 150 mV
88
90
91
93
< 17
3
94
95
%
%
Pre-Regulator
Input Voltage
Input Leakage Current
Regulator Bias Current
+ V IN
I LKG
I REG1
I REG2
I IN = 10 μ A
V IN = 75 V, V CC > V REG
V IN = 75 V, V INDET < V SD
V IN = 75 V, V INDET > V REF
36
86
8
75
10
200
14
V
μ A
mA
Regulator_Comp
Pre-Regulator drive Capability
I SOURCE
I SINK
I START
V CC = 12 V
V CC < V REG
- 29
50
20
- 19
82
-9
110
μ A
mA
V CC Pre-Regulator Turn Off
Threshold Voltage
Undervoltage Lockout
V REG1
V REG2
V UVLO
V INDET > V REF
V INDET = 0 V
V CC Rising
T A = 25 °C
T A = 25 °C
7.4
8.5
7.15
8.1
9.1
9.1
9.2
8.8
8.8
10.4
9.7
9.8
9.3
V
V ULVO Hysteresis f
Soft-Start
V UVLOHYS
0.5
Soft-Start Current Output
Soft-Start Completion Voltage
I SS
V SS_COMP
Start-Up Condition
Normal Operation
12
7.35
20
8.05
28
8.85
μ A
V
Shutdown
V INDET Shutdown
V SD Hysteresis
V SD
V INDET Rising
V INDET Falling
350
550
200
720
mV
V INDET Input Threshold Protection
V INDET - V IN Under Voltage
V UV Hysteresis
V UV
V INDET Rising
V INDET Falling
3.13
0.23
3.3
0.3
3.46
0.35
V
Over Temperature Voltages
Activating Temperature
De-Activating Temperature
OTP_on
OTP_off
T J Increasing
T J Decreasing
135
113
°C
www.vishay.com
4
Document Number: 73866
S-80112-Rev. D, 21-Jan-08
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