TPS658621A Datasheet, PDF (66/105 Pages) Texas Instruments – Advanced Power Management Unit

TPS658621A
SLVSA58 – DECEMBER 2009
www.ti.com
3.56.3 LDO4 DVM LDO – Output Voltage Registers
Registers 0x32 and 0x33 set the output voltage for LDO4. The slew rate is internally fixed to 7mV/μSec
(typ).
LDO4V1 [Addr 0x32]
Bit Number
B7
Bit Name
RSVD327
Function NOT USED
LDO4V2 [Addr 0x33]
Bit Number
B7
Bit Name
RSVD337
Function NOT USED
Table 3-34. DVM Supply Voltage Selection – LDO4
B6
RSVD326
NOT USED
B5
RSVD325
NOT USED
B4
B3
B2
B1
B0
LDO4V1[4] LDO4V1[3] LDO4V1[2] LDO4V1[1] LDO4V1[0]
LDO4 SUPPLY OUTPUT VOLTAGE (See Table 3-35)
B6
RSVD336
NOT USED
B5
RSVD335
NOT USED
B4
B3
B2
B1
B0
LDO4V2[4] LDO4V2[3] LDO4V2[2] LDO4V2[1] LDO4V2[0]
LDO4 SUPPLY OUTPUT VOLTAGE (See Table 3-35)
The available output voltages are shown below:
RANGE
1.7V–2.475V
Table 3-35. LDO4V1[4:0] and LDO4V2[4:0] Output Voltage Settings
[4:0]
00000
00001
00010
00011
00100
00101
00110
00111
VOUT (V)
1.700
1.725
1.750
1.775
1.800
1.825
1.850
1.875
[4:0]
01000
01001
01010
01011
01100
01101
01110
01111
VOUT (V)
1.900
1.925
1.950
1.975
2.000
2.025
2.050
2.075
[4:0]
10000
10001
10010
10011
10100
10101
10110
10111
VOUT (V)
2.100
2.125
2.150
2.175
2.200
2.225
2.250
2.275
[4:0]
11000
11001
11010
11011
11100
11101
11110
11111
VOUT (V)
2.300
2.325
2.350
2.375
2.400
2.425
2.450
2.475
3.56.4 LDO Output Discharge Switches
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.
3.56.5 Non-DVM Supply Voltage Settings
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).
Table 3-36. Non-DVM Supply Voltage Selection
SUPPLYV1 [Addr 0x41]
Bit Name VLDO0[2]
VLDO0[1]
VLDO0[0]
Function LDO0 OUTPUT VOLTAGE (See Table 3-38)
VLDO1[4]
VLDO1[3]
VLDO1[2]
VLDO1[1]
LDO1 OUTPUT VOLTAGE (See Table 3-37)
VLDO1[0]
SUPPLYV3 [Addr 0x43]
Bit Name LDO7_SW
Function
SPARE
LDO6_SW
SPARE
VLDO7[2]
VLDO7[1]
VLDO7[0]
VLDO6[2]
VLDO6[1]
VLDO6[0]
LDO7 OUTPUT VOLTAGE (See Table 3-38) LDO6 OUTPUT VOLTAGE (See Table 3-38)
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