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L6997STR Datasheet

  • L6997STR

  • STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS

  • 30頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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L6997S
STEP DOWN CONTROLLER
FOR LOW VOLTAGE OPERATIONS
1
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Features
FROM 3V TO 5.5V V
CC
RANGE
MINIMUM OUTPUT VOLTAGE AS LOW AS
0.6V
1V TO 35V INPUT VOLTAGE RANGE
CONSTANT ON TIME TOPOLOGY
VERY FAST LOAD TRANSIENTS
0.6V, 鹵1% VREF
SELECTABLE SINKING MODE
LOSSLESS CURRENT LIMIT, AVAILABLE
ALSO IN SINKING MODE
REMOTE SENSING
OVP,UVP LATCHED PROTECTIONS
600碌A(chǔ) TYP QUIESCENT CURRENT
POWER GOOD AND OVP SIGNALS
PULSE SKIPPING AT LIGTH LOADS
94% EFFICIENCY FROM 3.3V TO 2.5V
Figure 1. Package
TSSOP20
Table 1. Order Codes
Part Number
L6997S
L6997STR
Package
TSSOP20
Tape & Reel
3
Description
2
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Applications
NETWORKING
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DC/DC MODULES
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DISTRIBUTED POWER
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MOBILE APPLICATIONS
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CHIP SET, CPU, DSP AND MEMORIES
SUPPLY
Figure 2. Minimum Component Count Application
Rin2
Rin1
The device is a high efficient solution for networking
dc/dc modules and mobile applications compatible
with 3.3V bus and 5V bus.
It's able to regulate an output voltage as low as 0.6V.
The constant on time topology assures fast load tran-
sient response. The embedded voltage feed-forward
provides nearly constant switching frequency opera-
tion in spite of a wide input voltage range.
An integrator can be introduced in the control loop to
reduce the static output voltage error.
The remote sensing improves the static and dynamic
regulation, recovering the wires voltage drop.
Pulse skipping technique reduces power consump-
tion at light loads. Drivers current capability allows
output currents in excess of 20A.
3.3V
Cin
VCC
VDR
OSC
BOOT
HGATE
HS
Dboot
Cboot
L
0.6V
Ro1
PHASE
PGOOD
OVP
LGATE
LS
DS
Ro2
ILIM
Rilim
L6997S
PGND
GND
GNDSENSE
Cout
SS
Css
VSENSE
INT
VFB
SHDN
Vref
Cvref
June 2004
REV. 1
1/30

L6997STR 產(chǎn)品屬性

  • L6997S View All Specifications

  • Step-Down DC/DC Controllers with External MOSFETS and Monolithic Step-Down Regulators

  • 1

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 控制器

  • 1

  • 1MHz

  • 94%

  • 3 V ~ 5.5 V

  • 是

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 0°C ~ 85°C

  • 20-TSSOP（0.173"，4.40mm 寬）

  • Digi-Reel®

  • 497-4225-6

L6997STR相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
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    描述
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  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    STMICROELECTRON...
  • 英文版
    DINAMICALLY PROGRAMMABLE SYNCHRONOUS STEP DOWN CONTROLLER FO...
    STMICROELECTRONICS
  • 英文版
    DINAMICALLY PROGRAMMABLE SYNCHRONOUS STEP DOWN CONTROLLER FO...
    STMICROELECTRON...
  • 英文版
    STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
    STMICROELECTRON...
  • 英文版
    The best light source is supported by the best electrode tec...
    HAMAMATSU
  • 英文版
    The best light source is supported by the best electrode tec...
    HAMAMATSU ...
  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    STMICROELECTRON...
  • 英文版
    SWITCHING CONTROLLER, PDSO20, MO-153-AC, TSSOP-20
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    ST
  • 英文版
    DINAMICALLY PROGRAMMABLE SYNCHRONOUS STEP DOWN CONTROLLER FO...
    STMICROELECTRONICS
  • 英文版
    DINAMICALLY PROGRAMMABLE SYNCHRONOUS STEP DOWN CONTROLLER FO...
    STMICROELECTRON...
  • 英文版
    STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
    STMICROELECTRON...
  • 英文版
    STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
    STMICROELECTRON...
  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    STMICROELECTRONICS
  • 英文版
    STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONV...
    STMICROELECTRON...

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