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LP87702 データシート(PDF) 16 Page - Texas Instruments

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部品番号 LP87702
部品情報  LP87702 Dual Buck Converter and 5-V Boost With Diagnostic Functions
PDF  98 Pages
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

LP87702 データシート(HTML) 16 Page - Texas Instruments

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7.2 Functional Block Diagram
Diagnostics
UVLO
SW
Reset
Digital
Logic
Registers
I2C
Enable/
Disable,
Delay
Control
Slew-Rate
Control
Interrupts
nINT
SDA / EN3
SCL / EN2
EN1
VANA
OTP
EPROM
Thermal
Monitor
Oscillator
Buck0
ILIM Det
Pwrgood
Det
Overload
and SC
Det
Buck1
Boost
ILIM Det
Pwrgood
Det
Overload
and SC Det
ILIM Det
Pwrgood Det
Overload and
SC Det
Ref &
Bias
Iload ADC
Iload ADC
CLKIN / GPO2/ WD_DIS
GPO0
Ref &
Bias
PG0
PG1/ GPO1
VMON1
VMON2
Window
Watchdog
WD_RESET
WDI
NRST
7.3 Feature Descriptions
7.3.1 Step-Down DC/DC Converters
7.3.1.1 Overview
The LP87702 includes two high-efficiency step-down DC/DC converters. The buck converters deliver 0.7-V
to 3.36-V regulated voltage rails from 2.8-V to 5.5-V input-supply voltage. The converters are designed for
flexibility; most of the functions are programmable, thus optimizing the converter operation for each application:
• DVS support with programmable slew rate
• Automatic mode control based on the loading (PWM or PFM mode)
• Forced PWM mode option
• Optional external clock input to minimize crosstalk
• Optional spread spectrum technique to reduce EMI
• Synchronous rectification
• Current mode loop with PI compensator
• Soft start
• Programmable output voltage monitoring with maskable interrupt and selectable connection PG0 or PG1
• Average output current sensing (for PFM entry and load current measurement)
LP87702
SNVSBU3 – MARCH 2021
www.ti.com
16
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Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: LP87702



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