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AS3608 数据表(PDF) 13 Page - ams AG

部件名 AS3608
功能描述  System PMU with HV Back Light Driver
PDF  68 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS3608 数据表(HTML) 13 Page - ams AG

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www.austriamicrosystems.com
Revision 1.03
12 - 67
AS3608 2v2
Data Sheet - D e t a i l e d D e s c r i p t i o n - P o w e r M anage ment F uncti ons
8.1.2 LDO 1, LDO2, LDO3 & LDO4
These LDOs can be used to generate the periphery voltage for the digital processor or other external components (e.g. ext. DAC, USB-PHY, SD-
Cards, NAND-Flashes, FM-Tuner …). LDO4 is only available on AS3608.
Input Voltage VSUP5 for LDO3 and LDO4, and VSUP4 for LDO2 and LDO1
Output Voltage is PVDD1, PVDD2, PVDD3 & PVDD4 (1.2V to 3.5V)
Default value at start-up is defined by the boot ROM, when the boot ROM is not programmed the LDOs will not start-up
Driver strength: 160mA, can be programmed to 270mA
8.1.3 Parameter
VSUPx=3.6V, TA= 25ºC, unless otherwise specified.
Table 4. LDO Parameter
Symbol
Parameter
Condition
Min
Typ
Max
Unit
RON
On resistance
1
Ω
PSRR
Power supply rejection ratio
f=1kHz
70
dB
f=100kHz
40
IOFF
Shut down current
100
nA
IVDD
Supply current
without load
50
μA
low power enabled, without load
32
μA
Noise
Output noise
10Hz < f < 100kHz
50
µVrms
tstart
Startup time
200
µs
Vout_tol
Output voltage tolerance
minimum ±50mV
-2.5%
2.5%
mV
VLineReg
Line regulation
Static
<1
mV
Transient; Slope: tr=10µs
<10
VLoadReg
Load regulation
Static
<1
mV
Transient; Slope: tr=10µs
<10
ILIMIT
Current limitation
default
200
mA
has to be enabled via register
370



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