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TPS658620ZQZT датащи(PDF) 64 Page - Texas Instruments

номер детали TPS658620ZQZT
подробное описание детали  Advanced Power Management Unit
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производитель  TI [Texas Instruments]
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TPS658620ZQZT датащи(HTML) 64 Page - Texas Instruments

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3.56.3 LDO4 DVM LDO – OUTPUT VOLTAGE REGISTERS
3.56.4 LDO OUTPUT DISCHARGE SWITCHES
3.56.5 NON-DVM SUPPLY VOLTAGE SETTINGS
TPS658620
Advanced Power Management Unit
SLVS993 – OCTOBER 2009
www.ti.com
Registers 0x32 and 0x33 set the output voltage for LDO4. The slew rate is internally fixed to 7mV/
µSec
(typ).
Table 3-34. DVM Supply Voltage Selection – LDO4
LDO4V1 [Addr 0x32]
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
RSVD327
RSVD326
RSVD325
LDO4V1[4]
LDO4V1[3]
LDO4V1[2]
LDO4V1[1]
LDO4V1[0]
Function
NOT USED
NOT USED
NOT USED
LDO4 SUPPLY OUTPUT VOLTAGE (See Table 3-35)
LDO4V2 [Addr 0x33]
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
RSVD337
RSVD336
RSVD335
LDO4V2[4]
LDO4V2[3]
LDO4V2[2]
LDO4V2[1]
LDO4V2[0]
Function
NOT USED
NOT USED
NOT USED
LDO4 SUPPLY OUTPUT VOLTAGE (See Table 3-35)
The available output voltages are shown below:
Table 3-35. LDO4V1[4:0] and LDO4V2[4:0] Output Voltage Settings
RANGE
[4:0]
VOUT (V)
[4:0]
VOUT (V)
[4:0]
VOUT (V)
[4:0]
VOUT (V)
1.7V–2.475V
00000
1.700
01000
1.900
10000
2.100
11000
2.300
00001
1.725
01001
1.925
10001
2.125
11001
2.325
00010
1.750
01010
1.950
10010
2.150
11010
2.350
00011
1.775
01011
1.975
10011
2.175
11011
2.375
00100
1.800
01100
2.000
10100
2.200
11100
2.400
00101
1.825
01101
2.025
10101
2.225
11101
2.425
00110
1.850
01110
2.050
10110
2.250
11110
2.450
00111
1.875
01111
2.075
10111
2.275
11111
2.475
All LDO's, with exception of RTC_OUT LDO, have internal discharge resistors that are connected to
ground via internal switches when the LDO is turned OFF, thus discharging the output capacitor.
The LDO output discharge switches are always enabled when NORMAL state is set and during the
SUPPLYSEQ state.
Registers SUPPLYV1, SUPPLYV2, SUPPLYV3, SUPPLYV4 and SUPPLYV6 define the voltage settings
for the non-DVM supplies.
Register SUPPLYV4 has two bits that control the RTC_OUT LDO functionality. The RTC_OUT LDO will
be enabled when LDORTC_ON is 1. The power good threshold for the RTC_OUT LDO can be set as
follows: 2.4V (RTC_PGOOD is 1), 2.0V (RTC_PGOOD is 0).
DETAILED DESCRIPTION
64
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