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參數(shù)資料
| 型號： | TPS54429PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.01 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | GREEN, PLASTIC, HTSSOP-14 |
| 文件頁數(shù)： | 18/22頁 |
| 文件大小： | 651K |
| 代理商： | TPS54429PWP |
POWER PAD
TPS54429
PWP
HTSSOP14
SW1
VBST
SS
VO
VFB
GND
PGND1
14
7
5
6
2
3
4
1
VIN2
EN
PG
VREG5
13
12
11
9
8
PGND2
10
SW2
VIN1
PWP PACKAGE
(TOP VIEW)
SLVSAS1
– FEBRUARY 2011
DEVICE INFORMATION
PIN FUNCTIONS
PIN
DESCRIPTION
NAME
NO.
VO
1
Connect to output of converter. This terminal is used for On-Time Adjustment.
VFB
2
Converter feedback input. Connect to output voltage with feedback resistor divider.
5.5 V power supply output. A capacitor (typical 1
F) should be connected to GND. VREG5 is not active
VREG5
3
when EN is low.
SS
4
Soft-start control. A external capacitor should be connected to GND.
GND
5
Signal ground pin
PG
6
Open drain power good output
EN
7
Enable control input. EN is active high and must be pulled up to enable the device.
Ground returns for low-side MOSFET. Also serve as inputs of current comparators. Connect PGND and
PGND1, PGND2
8, 9
GND strongly together near the IC.
Switch node connection between high-side NFET and low-side NFET. Also serve as inputs to current
SW1, SW2
10, 11
comparators.
Supply input for high-side NFET gate driver (boost terminal). Connect capacitor from this pin to
VBST
12
respective SW1, SW2 terminals. An internal PN diode is connected between VREG5 to VBST pin.
Power input and connected to high side NFET drain. Supply input for 5-V internal linear regulator for the
VIN1, VIN2
13, 14
control circuitry.
Thermal pad of the package. Must be soldered to achieve appropriate dissipation. Should be connected
PowerPAD
Back side
to PGND.
2011, Texas Instruments Incorporated
5
Product Folder Link(s) :TPS54429
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