参数资料
型号: TPS84410RKGR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 4 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PQCC39
封装: 9 X 11 MM, 2.80 MM HEIGHT, GREEN, PLASTIC, BQFN-39
文件页数: 2/26页
文件大小: 819K
代理商: TPS84410RKGR
( )
=
W
-
÷
÷
è
è
SET
OUT
1.43
R
k
V
1
0.803
SLVSAR5
– SEPTEMBER 2011
APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
The VADJ control sets the output voltage of the TPS84410. The output voltage adjustment range is from 0.8V to
3.6V. The adjustment method requires the addition of RSET, which sets the output voltage, the connection of
SENSE+ to VOUT, and in some cases RRT which sets the switching frequency. The RSET resistor must be
connected directly between the VADJ (pin 35) and AGND (pin 33
& 34). The SENSE+ pin (pin 36) must be
connected to VOUT either at the load for improved regulation or at VOUT of the module. The RRT resistor must
be connected directly between the RT/CLK (pin 4) and AGND (pins 33
& 34).
Table 1 gives the standard external RSET resistor for a number of common bus voltages, along with the
recommended RRT resistor for that output voltage.
Table 1. Standard RSET Resistor Values for Common Output Voltages
RESISTORS
OUTPUT VOLTAGE VOUT (V)
0.8
1.2
1.5
1.8
2.5
3.3
RSET (k)
open
2.87
1.65
1.15
0.673
0.459
RRT (k)
1200
715
348
For other output voltages, the value of the required resistor can either be calculated using the following formula,
or simply selected from the range of values given in Table 2.
(1)
Table 2. Standard RSET Resistor Values
VOUT (V)
RSET (k)
RRT(k)
fSW(kHz)
VOUT (V)
RSET (k)
RRT(k)
fSW(kHz)
0.8
open
1200
650
2.3
0.768
348
1000
0.9
11.8
1200
650
2.4
0.715
348
1000
1.0
5.83
1200
650
2.5
0.673
348
1000
1.1
3.83
1200
650
2.6
0.634
348
1000
1.2
2.87
715
750
2.7
0.604
348
1000
1.3
2.32
715
750
2.8
0.576
348
1000
1.4
1.91
715
750
2.9
0.549
348
1000
1.5
1.65
348
1000
3.0
0.523
348
1000
1.6
1.43
348
1000
3.1
0.499
348
1000
1.7
1.27
348
1000
3.2
0.475
348
1000
1.8
1.15
348
1000
3.3
0.459
348
1000
1.9
1.05
348
1000
3.4
0.442
348
1000
2.0
0.953
348
1000
3.5
0.422
348
1000
2.1
0.845
348
1000
3.6
0.412
348
1000
2.2
0.825
348
1000
10
Copyright
2011, Texas Instruments Incorporated
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