參數(shù)資料
型號: TPS75101QPWPRQ1R
廠商: Texas Instruments, Inc.
元件分類: 基準電壓源/電流源
英文描述: FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
中文描述: 快速瞬態(tài)響應1.5低壓差電壓調節(jié)器
文件頁數(shù): 19/27頁
文件大小: 398K
代理商: TPS75101QPWPRQ1R
TPS75101-Q1,
75115-Q1,
75118-Q1,
75125-Q1,
75133-Q1 WITH POWER GOOD
TPS75301-Q1, TPS75315-Q1, TPS75318-Q1, TPS75325-Q1, TPS75333-Q1 WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SGLS159
APRIL 2003
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
programming the TPS75x01Q adjustable LDO regulator
The output voltage of the TPS75x01Q adjustable regulator is programmed using an external resistor divider as
shown in Figure 24. The output voltage is calculated using:
VO
Vref
1
R1
R2
(1)
Where:
V
ref
= 1.1834 V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 40-
μ
A divider current. Lower value resistors can be used
but offer no inherent advantage and waste more power. Higher values should be avoided as leakage currents at
FB
increase
the
output
voltage
error.
The
R2 = 30.1 k
to set the divider current at 40
μ
A and then calculate R1 using:
recommended
design
procedure
is
to
choose
R1
VO
Vref
1
R2
(2)
OUTPUT
VOLTAGE
2.5 V
3.3 V
3.6 V
R1
R2
UNIT
33.2
53.6
61.9
30.1
30.1
30.1
k
k
k
OUTPUT VOLTAGE
PROGRAMMING GUIDE
VO
VI
PG or
RESET
OUT
FB/SENSE
GND
R1
R2
EN
IN
0.7 V
2 V
TPS75x01Q
PG or RESET Output
0.22
μ
F
250 k
CO
NOTE: To reduce noise and prevent
oscillation, R1 and R2 need to be as close
as possible to the FB/SENSE terminal.
Figure 24. TPS75x01Q Adjustable LDO Regulator Programming
相關PDF資料
PDF描述
TPS75133QPWPREPR FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75125QPWPREPR FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75118QPWPREPR FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75115QPWPREPR FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS75101QPWPREPR FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
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