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MC34701EK Datasheet

  • MC34701EK

  • Freescale Semiconductor, Inc [1.5 A Switch-Mode Power Suppl...

  • FREESCALE

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TERMINAL CONNECTIONS
Table 1.
Terminal Function Description (continued)
A functional description of each terminal can be found in the
FUNCTIONAL TERMINAL DESCRIPTION
section beginning
on
page 15.
Terminal
20
Terminal
Name
CS
Formal Name
Current Sense
Definition
Current sense terminal of the LDO. Overcurrent protection of the linear regulator
external power MOSFET. The voltage drop over the LDO current sense resistor RS
is sensed between the CS and LDO terminals. The LDO current limit can be adjusted
by selecting the proper value of the current sensing resistor RS.
LDO gate drive of the external pass N-channel MOSFET.
The input supply terminal for the integrated circuit. The internal circuits of the IC are
supplied through this terminal.
Internal supply voltage. A ceramic low ESR 1uF 6V X5R or X7R capacitor is
recommended.
I
2
C address selection. This terminal can either be left open, tied to VDDI, or
grounded through a 10 k鈩?resistor.
Enable 1 Input. The combination of the logic state of the Enable 1 and Enable 2
inputs determines operation mode and type of power sequencing of the IC.
Enable 2 Input. The combination of the logic state of the Enable 1 and Enable 2
inputs determines operation mode and type of power sequencing of the IC.
This terminal allows programming of the Power-ON Reset delay by means of an
external RC network.
The Reset Control circuit monitors both the switching regulator and the LDO
feedback voltages. It is an open drain output and has to be pulled up to some supply
voltage (e.g., the output of the LDO) by an external resistor.
This terminal sets the CLKSYN terminal as either an oscillator output or a
synchronization input terminal. The CLKSEL terminal is also used for the I
2
C
address selection.
Oscillator output/synchronization input terminal.
21
22
23
26
27
28
29
30
LDRV
VIN1
VDDI
ADDR
EN1
EN2
RT
RST
Linear Drive
Input Voltage 1
Power Supply
Address
Enable 1
Enable 2
Reset Timer
Reset Output
(Active LOW)
Clock Selection
31
CLKSEL
32
CLKSYN
Clock Synchronization
34701
4
Analog Integrated Circuit Device Data
Freescale Semiconductor

MC34701EK 產(chǎn)品屬性

  • 42

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • 轉(zhuǎn)換器，F(xiàn)reescale 電源 QUICC? I，II

  • 2.8 V ~ 6 V

  • 1

  • 可調(diào)

  • -40°C ~ 85°C

  • 表面貼裝

  • 32-SOIC（0.295"，7.50mm 寬）

  • 32-SOIC

  • 管件

  • KIT33701DWBEVB-ND - KIT FOR 33701 POWER SUPPLY

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