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參數資料
型號： TPS65950ZXNR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝： 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數： 116/167頁
文件大小： 2566K
代理商： TPS65950ZXNR
4.1.10 VAUX1 LDO Regulator
TPS65950
Integrated Power Management/Audio Codec
SWCS032 – OCTOBER 2008
www.ti.com
Table 4-10. VSIM LDO Regulator Characteristics (continued)
Parameter
Test Conditions
Min(1)
Typ(2) Max(3)
Unit
VIN drops 500 mV
Transient line regulation
10
mV
Slew: 40 mV/
s
The VAUX1 general-purpose (GP) LDO regulator powers the auxiliary devices. The VAUX1 regulator can
also support an inductive load such as a vibrator. While operating in vibrator mode, the VAUX1 LDO has
the following features:
Programmable, register-controlled, soft-start function
Enabled through the VIBRA.SYNC pin
Programmable, register-controlled, duty cycle (PWM generator) based on a nominal 4-Hz cycle derived
from an internal 32-kHz clock
Table 4-11 lists the characteristics of the regulator.
Table 4-11. VAUX1 LDO Regulator Characteristics
Parameter
Test Conditions
Min(1)
Typ(2) Max(3)
Unit
Output Load Conditions
Filtering capacitor
Connected from VAUX1.OUT to analog ground
0.3
1
2.7
F
Filtering capacitor ESR
20
600
m
Vibrator inductive load(4)
Connected from VAUX1.OUT to analog ground
70
700
H
Vibrator load resistance(4)
15
50
Electrical Characteristics
VIN
Input voltage
2.7
3.6
4.5
V
1.455
1.5
1.545
1.746
1.8
1.854
VOUT
Output voltage
On mode and low-power mode
2.425
2.5
2.575
V
2.716
2.8
2.884
2.91
3.0
3.09
On mode
200
IOUT
Rated output current
mA
Low-power mode
5
Dc load regulation
On mode: IOUT = IOUTmax to 0
20
mV
Dc line regulation
On mode, VIN = VINmin to VINmax at IOUT = IOUTmax
3
mV
IOUT = 0, CL = 1 F (within 10% of VOUT)
100
Turn-on time
s
Soft-start function for inductive load
500
Turn-off time
5000
s
Wake-up time
Full load capability
10
s
f < 10 kHz
50
10 kHz < f < 100 kHz
40
Ripple rejection
dB
f = 1 MHz
30
VIN = VOUT + 1 V, IO = IMax
On mode, IOUT = 0
70
On mode, IOUT = IOUTmax
270
Ground current
Low-power mode, IOUT = 0
15
A
Low-power mode, IOUT = 5 mA
20
Off mode at 55
°C
1
VDO
Dropout voltage
On mode, IOUT = IOUTmax
250
mV
ILoad: IMin – IMax
Transient load regulation
–40
40
mV
Slew: 40 mA/
s
VIN drops 500 mV
Transient line regulation
10
mV
Slew: 40 mV/
s
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
(4)
Parameter not tested, used for design specification only
Power Module
52
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