參數(shù)資料
型號(hào)： TPS53314RGFT
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 1070 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 5 X 7 MM, GREEN, PLASTIC, VQFN-40
文件頁(yè)數(shù)： 28/29頁(yè)
文件大?。?/td> 800K
代理商： TPS53314RGFT
SLUSAK3
– MAY 2011
PIN DESCRIPTIONS (continued)
PIN
I/O/P(1)
DESCRIPTION
NAME
NO.
29
31
N/C
No connection
33
34
Open drain power good flag. Provides a 1-ms start up delay after the VFB pin voltage falls within
PGOOD
32
O
specified limits. When the VFB pin voltage goes outside the specified limits, the PGOOD pin goes low
within 10
s.
2
5
6
PGND
7
G
Power GND
8
9
10
Switching frequency selection. Connect a resistance to GND or VREG to select switching frequency using
RF
38
I
Table 2. The switching frequency is detected and stored during the startup.
OCL detection threshold setting pin. 10
A at room temperature, 4700 ppm/°C current is sourced and set
the OCL trip voltage as follows.
TRIP
35
I
space VOCL = VTRIP/8
( VTRIP ≤ 0.6 V, VOCL ≤ 75 mV)
Supply input for high-side FET gate driver (boost terminal). Connect capacitor from this pin to LL-node.
VBST
30
P
Internally connected to the VREG pin via bootstrap MOSFET switch.
VDD
40
P
Controller power supply input.
VFB
37
I
Output feedback input. Connect this pin to VOUT through a resistor divider.
11
12
VIN
13
P
Conversion power input.
14
15
VREG
3
P
5-V LDO output.
Pad
–
Package thermal pad. Use proper number of vias to connect to GND plane for heat dissipation.
8
Copyright
2011, Texas Instruments Incorporated
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