LX1732CDU-TR データシートの表示（PDF） - Microsemi Corporation
部品番号
コンポーネント説明
メーカー
LX1732CDU-TR Datasheet PDF : 12 Pages
| |||
INTEGRATED PRODUCTS
LX1732
High Current PFM Boost Converter
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VIN) ........................................................................-0.3V to 7.0V
Output Voltage (VC) .........................................................................-0.3V to 7.0V
Switch Voltage (VSW) .......................................................................-0.3V to 7.0V
Shutdown Input Voltage (VSHDN) ......................................... -0.3V to (VC + 0.3V)
Low Battery Detect Output (V LBO) ...................................... -0.3V to (VC + 0.3V)
Low Battery Detect Input Voltage (VLBI) .............................. -0.3V to (VC+ 0.3V)
Feedback Input Voltage (VFB) ............................................... -0.3V to (VC+ 0.3V)
Switch Current (ILX).................................................................................. 1.0ARMS
Operating Temperature Range ............................................................ 0°C to 70°C
Operating Junction Temperature.................................................................. 150°C
Storage Temperature Range...........................................................-65°C to 150°C
Peak Package Temp for Solder Reflow (40 second max. exposure) ............. 260°C (+0, -5)
PACKAGE PIN OUT
SW
1
VIN
2
SHDN
3
LBI
4
8
GND
7
VC
6
FB
5
LBO
DU PACKAGE
(Top View)
RoHS / Pb-free 100% Matte Tin Lead Finish
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
THERMAL DATA
DU Plastic MSOP 8-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
THERMAL RESISTANCE-JUNCTION TO CASE, θJC
206°C/W
39°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJC).
The θJA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
NAME
IN
FB
SHDN
SW
VC
GND
LBI
LBO
FUNCTIONAL PIN DESCRIPTION
DESCRIPTION
Unregulated IC Supply Voltage Input – Input range from +1.1V to 5.5V. Bypass with a 4.7µF or greater capacitor.
Control pin for output voltage programming. Connect this pin to a resistive divider network between the output
and GND to obtain an output voltage between 2.0V and 5.5V.
Active-Low Shutdown Input – A logic low shuts down the device and reduces the supply current to 0.1µA.
Connect SHDN to VCC for normal operation.
Inductor Switching Connection – Internally connected to the drain of an N-channel MOSFET.
Output voltage control pin: Connect this pin to the circuit load and cathode of the switching diode.
Common terminal for ground reference.
Low Battery Detect Comparator Input – Connect to a resistive divider network between the VCC and GND to set
the Low Battery Detect trip point. The LBI threshold is 0.6V.
Low Battery Detect Comparator Output – Open drain comparator output. This output is pulled low when VLBI is
less than 0.6V. LBO is high impedance during shutdown.
Copyright © 2000
Rev. 1.1c, 2005-03-03
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Share Link: 