參數(shù)資料
型號： LM5035AMH-1
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO28
封裝： TSSOP-28
文件頁數(shù)： 26/30頁
文件大?。?/td> 585K
代理商： LM5035AMH-1
TSSOP 20 PIN
LM5035A
LLP PIN
LM5035A
TSSOP 28 PIN
LM5035A-1
Name
Description
Application Information
5
4
9
RT
Oscillator Frequency
Control and Sync Clock
Input
Normally biased at 2V. An external
resistor connected between RT
and AGND sets the internal
oscillator frequency. The internal
oscillator can be synchronized to
an external clock with a frequency
higher than the free running
frequency set by the RT resistor.
6
5
10
AGND
Analog Ground
Connect directly to Power Ground.
7
6
11
CS
Current Sense input for
current limit
If CS exceeds 0.25V, the output
pulse will be terminated, entering
cycle-by-cycle current limit. An
internal switch holds CS low for
50ns after HO or LO switches high
to blank leading edge transients.
8
7
12
SS
Soft-start Input
An internal 110A current source
charges an external capacitor to
set the soft-start rate. During a
current limit restart sequence, the
internal current source is reduced
to 1.2A to increase the delay
before retry.
9
8
13
DLY
Timing programming pin
for the LO and HO to SR1
and SR2 outputs.
An external resistor to ground sets
the timing for the non-overlap time
of HO to SR1 and LO to SR2.
10
9
14
RES
Restart Timer
If cycle-by-cycle current limit is
exceeded during any cycle, a 22 A
current is sourced to the RES pin
capacitor.If the RES capacitor
voltage reaches 2.5V, the soft-start
capacitor will be fully discharged
and then released with a pull-up
current of 1.2A. After the first
output pulse at LO (when SS
>COMP offset, typically 1V), the SS
pin charging current will revert to
110A.
11
15
HB
Boost voltage for the HO
driver
An external diode is required from
VCC to HB and an external
capacitor is required from HS to HB
to power the HO gate driver.
12
16
HS
Switch node
Connection common to the
transformer and both power
switches. Provides a return path for
the HO gate driver.
13
17
HO
High side gate drive
output.
Output of the high side PWM gate
driver. Capable of sinking 2A peak
current
14
19
LO
Low side gate dfrive
output.
Output of the low side PWM gate
driver. Capable of sinking 2A peak
current.
15
20
PGND
Power Ground
Connect directly to Analog Ground.
5
www.national.com
LM5035A/LM5035A-1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM5035AMH-1/NOPB 功能描述:電壓模式 PWM 控制器 100V Hb Pwm W/Driver 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
LM5035AMHX 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PWM Controller with Integrated Half-Bridge and SyncFET PWM Controller with Integrated Half-Bridge and SyncFET
LM5035AMHX/NOPB 功能描述:電壓模式 PWM 控制器 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
LM5035AMHX-1 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PWM Controller with Integrated Half-Bridge and SyncFET PWM Controller with Integrated Half-Bridge and SyncFET
LM5035AMHX-1/NOPB 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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