参数资料
| 型号： | MC34713EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 10/23页 |
| 文件大小： | 0K |
| 描述： | IC CONVERTER DDR 24QFN |
| 标准包装： | 2,500 |
| 应用： | 转换器，DDR |
| 输入电压： | 3 V ~ 6 V |
| 输出数： | 1 |
| 输出电压： | 0.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 带卷 (TR) |
FUNCTIONAL DESCRIPTION
INTRODUCTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
Advanced microprocessor-based systems require
compact, efficient, and accurate point-of-load (PoL) power
supplies. These PoL supply high current and fast transient
response capability while maintaining regulation accuracy.
Voltage monitoring (power sequencing) and increased
operating frequency are also key features for PoL power
supplies.
PoL power supplies are non-isolated DC to DC converters
that are physically located near their load (on the same
printed circuit board) and take their input supply from an
intermediate bus. Their close proximity to the load allows for
higher efficiency, localized protection, and minimum
distribution losses. Their compact design and low
component-count also reduces overall system cost.
The 34713 is a PoL single-output power supply that
embodies an integrated solution that’s both highly cost-
effective and reliable. It utilizes a voltage-mode synchronous
buck switching converter topology with integrated low
R DS(ON) (50 m Ω ) N-channel power MOSFETs for high-
efficiency operation. It provides an output voltage with an
accuracy of less than ± 2.0%, capable of supplying up to 5.0 A
of continuous current. Its power sequencing/tracking abilities
makes it ideal for systems with multiple related supply rails. It
has an adjustable switching frequency, thus permitting
greater design flexibility and optimization over a wide range
of operating conditions, and can operate at up to 1.0 MHz to
significantly reduce the external components size and cost. It
also features an over-current limit control, and protects
against output over-voltage, under-voltage, and over-
temperature conditions. It also protects the system from
short-circuit events and incorporates a power-good output
signal to alert the host MCU should a fault occur.
Operation can be enabled or disabled by controlling the
SD pin, which offers power sequencing capabilities.
By monolithically integrating the control and supervisory
circuitry along with power-FETs, the 34713 offers a complete,
compact, cost-effective, and simple solution to satisfy the
PoL needs of today’s systems.
FUNCTIONAL PIN DESCRIPTION
REFERENCE VOLTAGE INPUT (VREFIN)
The 34713 will track the voltage applied at this pin.
ERROR AMPLIFIER INVERTING INPUT (INV)
Buck converter error amplifier inverting input. Connect the
output voltage feedback network to this pin.
FREQUENCY ADJUSTMENT INPUT (FREQ)
The buck converter switching frequency can be adjusted
by connecting this pin to an external resistor divider between
VDDI and GND pins. The default switching frequency (FREQ
COMPENSATION INPUT (COMP)
Buck converter external compensation network connects
to this pin. Use a type III compensation network.
pin connected to ground, GND) is set at 1.0 MHz.
INPUT SUPPLY VOLTAGE (VIN)
SOFT START ADJUSTMENT INPUT (ILIM)
Soft start timing can be adjusted by applying an external
IC power supply input voltage. Input filtering is required for
the device to operate properly.
voltage between 1.25 V and V DDI on this pin.
POWER GROUND (PGND)
SIGNAL GROUND (GND)
Analog ground of the IC. Internal analog signals are
Buck converter and discharge MOSFET power ground. It
is the source of the buck converter low side power MOSFET.
referenced to this pin voltage.
SWITCHING NODE (SW)
INTERNAL SUPPLY VOLTAGE OUTPUT (VDDI)
This is the output of the internal bias voltage regulator.
Connect a 1.0 μF, 6.0 V low ESR ceramic filter capacitor
between this pin and the GND pin. Filtering any spikes on this
output is essential to the internal circuitry stable operation.
OUTPUT VOLTAGE DISCHARGE PATH (VOUT)
Output voltage of the Buck Converter is connected to t his
pin. it only serves as the output discharge path once the SD
signal is asserted.
Buck converter switching node. This pin is connected to
the output inductor.
POWER INPUT VOLTAGE (PVIN)
Buck converter power input voltage. This is the drain of the
buck converter high side power MOSFET.
BOOTSTRAP INPUT (BOOT)
Bootstrap capacitor input pin. Connect a capacitor (as
discussed on page 18 ) between this pin and the SW pin to
34713
Analog Integrated Circuit Device Data
10
Freescale Semiconductor
相关PDF资料 |
PDF描述 |
|---|---|
| MC34716EPR2 | IC CONVERTER DDR 26QFN |
| MC34717EPR2 | IC CONVERTER DDR 26QFN |
| MC34827A1EPR2 | IC USB POWER MANAGER 20-QFN |
| MC34921AER2 | IC MOTOR DRVR PWM DC DUAL 64LQFP |
| MC34923EGR2 | IC PWM MOTOR DRIVER FULL 24-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34715 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 2WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 2WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 2POS, 3MM; Series:2261(5561); Pitch Spacing:3mm; Contact Termination:Through Hole Vertical; No. of Contacts:2; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34716EP | 功能描述:开关变换器、稳压器与控制器 DUAL SWITCH REG 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 |
| MC34716EPR2 | 功能描述:开关变换器、稳压器与控制器 DUAL SWITCH REG 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 |
| MC34717 | 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 4WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 4WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 4POS, 3MM; Series:2261(5561); Pitch Spacing:3mm; Contact Termination:Through Hole Right Angle; No. of Contacts:4; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34717EP | 功能描述:开关变换器、稳压器与控制器 5.0A 1.0MHZ DUAL SWITCH 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 |
发布紧急采购，3分钟左右您将得到回复。