參數(shù)資料
    型號(hào): TPS61087DSCR
    廠商: TEXAS INSTRUMENTS INC
    元件分類: 穩(wěn)壓器
    英文描述: 4.8 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO10
    封裝: GREEN, PLASTIC, SON-10
    文件頁數(shù): 25/30頁
    文件大小: 964K
    代理商: TPS61087DSCR
    SW
    SS
    FREQ
    IN
    SW
    AGND
    COMP
    FB
    EN
    PGND
    10-PIN3mmx3mmx1mmQFN
    Thermal
    Pad
    SLVS821B – MAY 2008 – REVISED MARCH 2010
    www.ti.com
    PIN ASSIGNMENT
    DRC, DSC PACKAGE
    (TOP VIEW)
    PIN FUNCTIONS
    PIN
    I/O
    DESCRIPTION
    NAME
    NO.
    COMP
    1
    I/O
    Compensation pin
    FB
    2
    I
    Feedback pin
    EN
    3
    I
    Shutdown control input. Connect this pin to logic high level to enable the device
    AGND
    4,
    Analog ground
    Thermal
    Pad
    PGND
    5
    Power ground
    SW
    6, 7
    Switch pin
    IN
    8
    Input supply pin
    FREQ
    9
    I
    Frequency select pin. The power switch operates at 650 kHz if FREQ is connected to GND and at 1.2 MHz
    if FREQ is connected to IN
    SS
    10
    Soft-start control pin. Connect a capacitor to this pin if soft-start needed. Open = no soft-start
    TYPICAL CHARACTERISTICS
    TABLE OF GRAPHS
    FIGURE
    IOUT(max)
    Maximum load current
    vs. Input voltage at High frequency (1.2 MHz)
    Figure 1
    IOUT(max)
    Maximum load current
    vs. Input voltage at Low frequency (650 kHz)
    Figure 2
    h
    Efficiency
    vs. Load current, VS = 15 V, VIN = 5 V
    Figure 3
    h
    Efficiency
    vs. Load current, VS = 9 V, VIN = 3.3 V
    Figure 4
    PWM switching - discontinuous conduction
    Figure 5
    PWM switching - continuous conduction
    Figure 6
    Load transient response
    at High frequency (1.2 MHz)
    Figure 7
    Load transient response
    at Low frequency (650 kHz)
    Figure 8
    Soft-start
    Figure 9
    Supply current
    vs. Supply voltage
    Figure 10
    Oscillator frequency
    vs. Load current
    Figure 11
    Oscillator frequency
    vs. Supply voltage
    Figure 12
    The typical characteristics are measured with the inductors 7447789003 3.3 H (high frequency) or 74454068
    6.8 H (low frequency) from Wurth and the rectifier diode SL22.
    4
    Copyright 2008–2010, Texas Instruments Incorporated
    Product Folder Link(s): TPS61087
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