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參數資料
型號: TPS65920BZCHR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA139
封裝: 10 X 10 MM, 0.65 MM PITCH, GREEN, PLASTIC, NFBGA-139
文件頁數: 48/115頁
文件大小: 1232K
代理商: TPS65920BZCHR
SWCS037G
– MAY 2008 – REVISED APRIL 2011
4.1.4
VDAC LDO Regulator
The VDAC programmable LDO regulator is a high-PSRR, low-noise linear regulator that powers the host
processor dual-video DAC. It is controllable with registers through I2C and can be powered down.
Table 4-6 describes the regulator characteristics.
Table 4-6. VDAC LDO Regulator Characteristics
Parameter
Test Conditions
Min
Typ
Max
Unit
Output Load Conditions
Filtering capacitor
Connected from VDAC.OUT to analog ground
0.3
1
2.7
μF
Filtering capacitor ESR
20
600
m
Electrical Characteristics
VIN
Input voltage
2.7
3.6
4.5
V
VOUT
Output voltage
On mode
1.164
1.2
1.236
V
1.261
1.3
1.339
1.746
1.8
1.854
IOUT
Rated output current
On mode
70
mA
Low-power mode
5
dc load regulation
On mode: 0
< IO < IMax
20
mV
dc line regulation
On mode, VIN = VINmin to VINmax at IOUT = IOUTmax
3
mV
Turn-on time
IOUT = 0, CL = 1 μF (within 10% of VOUT)
100
μs
Wake-up time
Full load capability
10
μs
Ripple rejection
f
< 20 kHz
65
dB
20 kHz
< f < 100 kHz
45
f = 1 MHz
40
VIN = VOUT + 1 V, IO = IMax
Output noise
100 Hz
< f < 5 kHz
400
nV/
√Hz
5 kHz
< f < 400 kHz
125
400 kHz
< f < 10 MHz
50
Ground current
On mode, IOUT = 0
150
μA
On mode, IOUT = IOUTmax
350
Low-power mode, IOUT = 0
15
Low-power mode, IOUT = 1 mA
25
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: 60 mA/
μs
VIN drops 500 mV
Transient line regulation
10
mV
Slew: 40 mV/
μs
38
Power Module
Copyright
2008–2011, Texas Instruments Incorporated
focus.ti.com: TPS65930/TPS65920
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TPS65920BZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
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