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参数资料
| 型号： | IR3637STRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 3/21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： | 440kHz |
| 占空比： | 85% |
| 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 |
| 配用： | IRPP3637-12A-ND - KIT REF DES 12A 1PH SYNC BUCK IRDC3637-ND - BOARD EVAL SYNC BUCK REGULATOR |
| 其它名称： | IR3637STRPBFDKR |
IR3637SPBF
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
360
400
1.25
440
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=400kHz
Fb=1V
40
81
150
85
200
0
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 the upper FET is turned off and the
lower FET is turned on.
Rev. 1.1
06/16/05
www.irf.com
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| IR3638STRPBF | 功能描述:电压模式 PWM 控制器 HI FREQ SYNC PWM 400kHz 0.6V Track RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| IR3640MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 20-MLPQ 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) |
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