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參數(shù)資料
| 型號(hào)： | Si9145BQ-T1 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Low-Voltage Switchmode Controller |
| 中文描述： | 低電壓開(kāi)關(guān)模式控制器 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 74K |
| 代理商： | SI9145BQ-T1 |
Si9145
Vishay Siliconix
www.vishay.com
8
Document Number: 70021
S-40710—Rev. K, 19-Apr-04
PIN CONFIGURATIONS
13
V
DD
V
S
MODE SELECT
OUTPUT
D
MAX
/SS
P
GND
COMP
UVLO
SET
FB
NI
V
REF
ENABLE
OTS
C
OSC
GND
R
OSC
SOIC-16
14
15
16
2
3
4
1
10
11
12
5
6
7
9
8
Top View
13
V
DD
V
S
OUTPUT
MODE SELECT
D
MAX
/SS
COMP
P
GND
UVLO
SET
ENABLE
FB
NI
V
REF
GND
OTS
C
OSC
R
OSC
TSSOP-16
14
15
16
2
3
4
1
10
11
12
5
6
7
9
8
Top View
ORDERING INFORMATIONSOIC-16
Part Number
Temperature Range
Si9145BY-T1
25 to 85 C
Si9145BY-T1—E3
ORDERING INFORMATIONTSSOP-16
Part Number
Temperature Range
Si9145BQ-T1
25 to 85 C
Si9145BQ-T1—E3
PIN DESCRIPTION
Pin 1: V
DD
The positive power supply for all functional blocks except
output driver. A bypass capacitor of 0.1 F (minimum) is
recommended.
Pin 2: MODE SELECT
This pin is used to enable maximum duty cycle limit and set
output polarity of controller. When connected to V
DD
, the
maximum duty cycle function is controlled by the D
MAX
/SS
pin.
The maximum duty cycle limit is usually used for forward,
flyback, and boost converters. The output polarity is high when
the PWM circuitry requires the external device to be turned on.
When connected to GND, the maximum duty cycle is not
limited (usually for buck converters driving a p-channel MOS).
The output polarity is low when the PWM circuitry requires the
external PMOS to be turned on.
Pin 3: D
MAX
/SS
D
MAX
/SS pin controls the maximum duty cycle achievable by
the PWM circuitry when the MODE SELECT = V
DD
.
When D
MAX
/SS is at less than 1.0 V (typical) the OUTPUT is
held low (0% duty cycle). When D
MAX
/SS is at more than 1.5 V
(typical), the PWM circuitry can achieve 100% duty cycle. With
voltage at D
MAX
/SS between 1.0 V and 1.5 V, the maximum
duty cycle is proportionally limited to this voltage.
The addition of external components can implement a soft
start function.
Pin 4: COMP
This pin is the output of the error amplifier. A compensation
network is connected from this pin to the FB pin to stabilize the
system. This pin drives one input of the internal pulse width
modulation comparator.
Pin 5: FB
The inverting input of the error amplifier. External resistors are
connected to this pin to set the regulated output voltage. The
compensation network is also connected to this pin.
Pin 6: NI
The non-inverting input of the error amplifier. In normal
operation it is externally connected to the V
REF
pin.
Pin 7: V
REF
This pin supplies 1.5 V trimmed to
voltage is generated by a band-gap reference.
1.5%. The reference
Pin 8: GND
Negative return for V
DD
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9145BQ-T1-E3 | 功能描述:DC/DC 開(kāi)關(guān)控制器 Lo V-Hi Freq Swmode Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SI9145BY | 功能描述:電壓模式 PWM 控制器 Low Volt SMP Cont RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SI9145BY | 制造商:Vishay Siliconix 功能描述:PWM CONTROLLER SMD 9145 SOIC16 |
| SI9145BY-E3 | 功能描述:DC/DC 開(kāi)關(guān)控制器 Lo V-Hi Freq Swmode Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SI9145BY-T1 | 功能描述:電壓模式 PWM 控制器 Lo V-Hi Freq Swmode Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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