参数资料
型号: TPS62067DSGR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 2 A SWITCHING REGULATOR, 3400 kHz SWITCHING FREQ-MAX, PDSO8
封装: 2 X 2 MM, 0.75 MM HEIGHT, GREEN, PLASTIC, WSON-8
文件页数: 9/28页
文件大小: 1208K
代理商: TPS62067DSGR
TPS62065
V
= 1.8 V
up to 2 A
OUT
R
360 k
1
R
180 k
2
V
= 2.9 V to 6 V
IN
C
10
OUT
F
C
10
IN
F
PVIN
AVIN
EN
MODE
AGND
PGND
SW
FB
C
22 pF
ff
L
1.0
H
m
PVIN
PGND
EN
FB
TPS62067
PG
L
1.0 H
m
SW
C
10 F
OUT
m
V
1.8V2 A
OUT
V
=2.9Vto6V
IN
AVIN
AGND
C
22pF
ff
R
100k
PG
W
R
180k
2
W
R
360k
1
W
C
10
IN
mF
2
1
OUT
1
OUT
REF
1
2
REF
V
R
V
= V
R =
1
R
V
+
-
÷
÷
è
è
f
p
z
1
ff
1
=
= 25 kHz
2
R
C
p
ff
1
C
=
2
R
25 kHz
www.ti.com
SLVS833A – MARCH 2010 – REVISED MAY 2010
APPLICATION INFORMATION
Figure 26. TPS62065 1.8V Adjustable Output Voltage Configuration
Figure 27. TPS62067 Adjustable 1.8-V Output
OUTPUT VOLTAGE SETTING
The output voltage can be calculated to:
with an internal reference voltage VREF typically 0.6V.
To minimize the current through the feedback divider network, R2 should be within the range of 120 k to 360
k
. The sum of R1 and R2 should not exceed ~1M, to keep the network robust against noise. An external
feed-forward capacitor Cff is required for optimum regulation performance. Lower resistor values can be used. R1
and Cff places a zero in the loop. The right value for Cff can be calculated as:
Copyright 2010, Texas Instruments Incorporated
17
Product Folder Link(s) :TPS62065 TPS62067
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