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参数资料
| 型号： | SI9122EDQ-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 3/20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
ABSOLUTE MAXIMUM RATINGS All voltages referenced to GND = 0 V
Parameter
Storage Temperature
Operating Junction Temperature
Limit
- 65 to 150
150
Unit
°C
TSSOP-20
Power Dissipation a
Thermal Impedance ( θ JA )
b
MLP65-20 c
TSSOP-20
MLP65-20
850
2500
75
38
mW
°C/W
Notes:
a. Device mounted on JEDEC compliant 1S2P test board.
b. Derate 14 mW/°C above 25 °C.
c. Derate 26 mW/°C above 25 °C.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING RANGE All voltages referenced to GND = 0 V
Parameter
V IN
V CC
CV CC
f OSC
R OSC
R BBM
C REF
C BOOST
Analog Inputs
Digital Inputs
Reference Voltage Output Current
SPECIFICATIONS a
Test Conditions
Unless Otherwise Specified
f NOM = 500 kHz, V IN = 75 V
Limit
36 to 75
10.5 to 13.2
≥ 4.7
200 to 500
30 to 72
22 to 50
0.1
0.1
0 to V CC - 2
0 to V CC
0.1 to 2.5
Limits
- 40 to 85 °C
Unit
V
μ F
kHz
k Ω
μ F
V
mA
Parameter
Symbol
V INDET = 7.5 V; 10.5 V ≤ V CC ≤ 13.2 V
Min. b
Typ. c
Max. b
Unit
Reference (3.3 V)
Output Voltage
Short Circuit Current
Load Regulation
Power Supply Rejection
V REF
I SREF
dVr/dir
PSRR
V CC = 12 V, 25 °C Load = 0 mA
V REF = 0 V
I REF = 0 to - 2.5 mA
at 100 Hz
3.2
3.3
- 30
60
3.4
- 50
- 75
V
mA
mV
dB
Oscillator
Accuracy (1 % R OSC )
R OSC = 30 k Ω , f NOM = 500 kHz
- 20
20
%
Max Frequency g
Foldback Frequency d
F MAX
F FOBK
R OSC = 22.6 k Ω
f NOM = 500 kHz, V CS2 - V CS1 > 150 mV
400
500
100
600
kHz
Error Amplifier
Input Bias Current
Gain
Bandwidth
Power Supply Rejection
Slew State
I BIAS
A V
BW
PSRR
SR
V EP = 0 V
at 110 Hz
- 40
- 2.2
5
60
0.5
- 15
μ A
V/V
MHz
dB
V/ μ s
Document Number: 73866
S-80112-Rev. D, 21-Jan-08
www.vishay.com
3
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