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参数资料
| 型号： | IR3637ASTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 8-SOIC |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 660kHz |
| 占空比： | 76% |
| 电源电压： | 4.5 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 标准包装 |
| 其它名称： | IR3637ASTRPBFDKR |
IR3637ASPbF
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
Error Amp
Fb Voltage Input Bias Current
Fb Voltage Input Bias Current
I FB1
I FB2
SS=3V, Fb=0.6V
SS=0V, Fb=0.6V
-0.1
-64
μ A
μ A
Transconductance
g m
450
600
800
μ mho
Oscillator
Frequency
Ramp-Amplitude Voltage
Freq
V RAMP
540
600
1.25
660
KHz
V
Output Drivers
Rise Time, Hdrv, Ldrv
Fall Time,Hdrv, Ldrv
T r
T f
C L =1500pF, Vcc=12V,2V to 9V
C L =1500pF, Vcc=12V, 9V to 2V
30
30
60
60
ns
ns
Dead Band Time
Max Duty Cycle
Min Duty Cycle
T DB
T ON
T OFF
Vcc=12V, 2V to 2V
Fb=0.6V, Freq=600KHz
Fb=1V
40
76
0
150
0
200
ns
%
%
PIN DESCRIPTIONS
PIN#
PIN SYMBOL PIN DESCRIPTION
1
2
3
4
5
6
7
8
Fb
Vcc
LDrv
Gnd
HDrv
Vc
Comp
SS / SD
This pin is connected directly to the output of the switching regulator via resistor divider to
set the output voltage and provide feedback to the error amplifier.
This pin provides biasing for the internal blocks of the IC as well as powers the low side
driver. A minimum of 0.1 μ F, high frequency capacitor must be connected from this pin to
ground to provide peak drive current capability.
Output driver for the synchronous power MOSFET.
IC's ground pin, this pin must be connected directly to the ground plane. A high frequency
capacitor (0.1 to 1 μ F) must be connected from Vcc and Vc pins to this pin for noise free
operation.
Output driver for the high side power MOSFET. The negative voltage at this pin may cause
instability for the gate drive circuit. To prevent this, a low forward voltage drop diode (e.g.
BAT54 or 1N4148) is required between this pin and ground.
This pin is connected to a voltage that must be at least 4V higher than the bus voltage
(assuming 5V threshold MOSFET) and powers the high side output driver. A minimum of
0.1 μ F, high frequency capacitor must be connected from this pin to ground to provide
peak drive current capability.
Compensation pin of the error amplifier. An external resistor and capacitor network is
typically connected from this pin to ground to provide loop compensation.
This pin provides user programmable soft-start function. Connect an extrnal capacitor
from this pin to ground to set the start up time of the output. The converter can be shut-
down by pulling this pin below 0.4V. During shutdown both drivers turn off.
www.irf.com
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3637SPBF | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| IR3637STRPBF | 功能描述:开关变换器、稳压器与控制器 2 CH OR 2 PHASE SYNC PWM CNTRLR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IR3638 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Frequency Synchronous |
| IR3638DR2G | 制造商:ON Semiconductor 功能描述: |
| IR3638SPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER FOR TRACKING APPLIACTIONS |
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