TEA1750_2
?NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 15 December 2008
7 of 29
NXP Semiconductors
TEA1750
GreenChip III SMPS control IC
7.1.2 Supply management
All internal reference voltages are derived from a temperature compensated and trimmed
on-chip band gap circuit. Internal reference currents are derived from a temperature
compensated and trimmed on-chip current reference circuit.
7.1.3 Latch input
Pin LATCH is a general purpose input pin, which can be used to switch off both
converters. The pin sources a current, I
O(LATCH)
on pin LATCH (typ 80 礎). Switching of
both converters is stopped as soon as the voltage on this pin drops below 1.25 V.
At initial start-up, switching is inhibited until the voltage on the LATCH pin is above 1.35 V
(typ). No internal ltering is done on this pin. An internal Zener clamp of 2.7 V (typ)
protects this pin from excessive voltages.
Fig 4. Start-up sequence, normal operation, and re-start sequence
I
HV
V
CC
LATCH
PROTECTION
PFCSENSE
PFCDRIVER
FBSENSE
FBDRIVER
FBCTRL
VOSENSE
V
out
CHARGING VCC
CAPACITOR
STARTING
CONVERTERS
NORMAL
OPERATION
PROTECTION
RESTART
soft start
soft start
VINSENSE
V
startup
V
th(UVLO)
V
trip
V
en(LATCH)
V
to(FBCTRL)
V
start(fb)
V
start(VINSENSE)
014aaa060
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
TEA1751T/N1,518
IC CTRLR GREENCHIP SMPS 16-SOIC
TEA1761T/N2,118
IC CTRLR GREENCHIP SYNC 8-SOIC
TEA1762T/N2/DG,118
IC CTLR SMPS SW SO14
TEA1791T/N1,118
IC CTRLR GREENCHIP SYNC 8-SOIC
TMP03FS-REEL
IC SENSOR TEMP/SERIAL OC 8SOIC
TMP141AIDBVTG4
IC TEMP SENSOR DGTL OUT SOT23-6
TMP401AIDGKTG4
IC TEMP SENSOR DGTL OUT 8-MSOP
TPS2346PWRG4
IC HOT SWAP POWER MGR 24-TSSOP
相关代理商/技术参数
TEA1750T/N1/DG,518
功能描述:DC/DC 开关控制器 12V -80uA 125KHz RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
TEA1750T-T
功能描述:DC/DC 开关控制器 GREENCHIPIII RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
TEA1751AT/N1,518
功能描述:DC/DC 开关控制器
RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
TEA1751AT/N1518
制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述:
TEA1751LT
制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip III SMPS control IC
TEA1751LT/N1
制造商:NXP Semiconductors 功能描述:AC-DC PFC FLYBACK CNTRL 16SOIC 制造商:NXP Semiconductors 功能描述:AC-DC, PFC, FLYBACK, CNTRL, 16SOIC 制造商:NXP Semiconductors 功能描述:GreenChip III SMPS Control 16-Pin SO
TEA1751LT/N1,518
功能描述:DC/DC 开关控制器 GREENNCHIP SMPS CONTROL IC RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
TEA1751LT/N1518
制造商:NXP Semiconductors 功能描述:IC SMPS SOIC-16