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| 型号： | MC34710EW |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY ADJ DUAL SW 32SOIC |
| 产品变化通告： | AMPD Product Discontinuation 12/Dec/2012 |
| 标准包装： | 42 |
| 应用： | 通用，监控器，序列 |
| 电流 - 电源： | 7.5mA |
| 电源电压： | 13 V ~ 32 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-SSOP（0.295"，7.50mm 宽）裸露焊盘 |
| 供应商设备封装： | 32-SOICW 裸露焊盘 |
| 包装： | 管件 |
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
SUPERVISORY FUNCTIONS
operation will be suppressed during startup and shutdown to
ensure that V CORE - V I /O = 0.9V.
Supervisory Circuitry
The supervisory circuitry provides control of the RST line,
an open drain signal, based on system operating conditions
monitored by the 34710. V I /O , V CORE , V B+ , and thermal
shutdown (TSD) detectors in various parts of the chip are
monitored for error conditions. V I /O , V CORE , V B+ , and thermal
shutdown have both positive and negative-going thresholds
for triggering the reset function.
The supervisor circuitry also ensures that the regulator
outputs follow a predetermined power-up and power-down
sequence. Specifically, the sequencing ensures that V I /O is
never less than 0.9V below V CORE . This means that V CORE -
V I /O will be clamped at 0.5V, and that the V CORE regulator
VB Charge Pump
The high side MOSFET in the switching regulator (buck
converter) requires a gate drive supply voltage that is biased
higher than the B+ voltage, and this boosted voltage is
provided by the internal charge pump and stored in a
capacitor between the VB pin and the B+ pin. The charge
pump operates directly from the B+ supply, and uses an
internal oscillator operating at 200kHz.
Internal Oscillator
The internal oscillator provides a 200kHz square wave
signal for charge pump operation and for the buck converter.
34710
Analog Integrated Circuit Device Data
10
Freescale Semiconductor
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| MC34710EWR2 | 功能描述:开关变换器、稳压器与控制器 DUAL OUTPUT DC 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 |
| MC34711 | 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 14WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 14WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 14POS, 3MM; Series:2261(5561); Pitch Spacing:3mm; Contact Termination:Through Hole Right Angle; No. of Contacts:14; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34712EP | 功能描述:开关变换器、稳压器与控制器 SINGLE REGULATOR FOR DDR 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 |
| MC34712EPR2 | 功能描述:开关变换器、稳压器与控制器 SNGL REGULTR FOR DDR 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 |
| MC34713 | 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 20WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 20WAY |
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