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TPS658620ZQZT датащи(PDF) 63 Page - Texas Instruments

номер детали TPS658620ZQZT
подробное описание детали  Advanced Power Management Unit
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS658620ZQZT датащи(HTML) 63 Page - Texas Instruments

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3.56 LINEAR REGULATORS
3.56.1 OUTPUT VOLTAGE MONITORING
3.56.2 LDO2 DVM LDO - OUTPUT VOLTAGE REGISTERS
TPS658620
Advanced Power Management Unit
www.ti.com
SLVS993 – OCTOBER 2009
The TPS658620 offers ten integrated linear dropout regulators (LDOs), designed to be stable over the
operating load range with use of external ceramic capacitors. The output voltage can be programmed via
I2C. All of the LDOs, with the exception of LDO5 and RTC_OUT LDO, have uncommitted input power
supply pins (VIN_LDO01, VIN_LDO23, VIN_LDO4, VIN_LDO678, VIN_LDO9) which should be externally
connected to a number of system rails including SYS and the output of SM2.
The LDO5 and RTC_OUT regulators are internally connected to the SYS pin.
Internal power good comparators monitor the LDO outputs and detect when the output voltage is below
95% of the programmed value. This information is used by the TPS658620 to generate interrupts or to
trigger distinct operating modes, depending on specific I2C register settings. See interrupt and sequencing
controller section for additional details.
Registers 0x29, 0x2A, 0x2F and 0x30 set the output voltage for LDO2. The slew rate is internally fixed to
7mV/
µSec (typ).
Table 3-32. DVM Supply Voltage Selection – LDO2
LDO2AV1 [Addr 0x29]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
RSVD297
RSVD296
RSVD295
LDO2AV1[4]
LDO2AV1[3]
LDO2AV1[2]
LDO2AV1[1]
LDO2AV1[0]
Function
NOT USED
NOT USED
NOT USED
LDO2 SUPPLY OUTPUT VOLTAGE (See Table 3-33)
SM1V2 [Addr 0x24]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
RSVD2A7
RSVD2A6
RSVD2A5
LDO2AV2[4]
LDO2AV2[3]
LDO2AV2[2]
LDO2AV2[1]
LDO2AV2[0]
Function
NOT USED
NOT USED
NOT USED
LDO2 SUPPLY OUTPUT VOLTAGE (See Table 3-33)
LDO2BV1 [Addr 0x2F]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
RSVD2F7
RSVD2F6
RSVD2F5
LDO2BV1[4]
LDO2BV1[3]
LDO2BV1[2]
LDO2BV1[1]
LDO2BV1[0]
Function
NOT USED
NOT USED
NOT USED
LDO2 SUPPLY OUTPUT VOLTAGE (See Table 3-33)
LDO2BV2 [Addr 0x30]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
RSVD307
RSVD306
RSVD305
LDO2BV2[4]
LDO2BV2[3]
LDO2BV2[2]
LDO2BV2[1]
LDO2BV2[0]
Function
NOT USED
NOT USED
NOT USED
LDO2 SUPPLY OUTPUT VOLTAGE (See Table 3-33)
The available output voltages for LDO2 are shown below:
Table 3-33. LDO2AV1/2[4:0] and LDO2BV1/2[4:0] Settings
RANGE
[4:0]
VOUT (V)
[4:0]
VOUT (V)
[4:0]
VOUT (V)
[4:0]
VOUT (V)
0.725V–1.50V
00000
0.725
01000
0.925
10000
1.125
11000
1.325
00001
0.750
01001
0.950
10001
1.150
11001
1.350
00010
0.775
01010
0.975
10010
1.175
11010
1.375
00011
0.800
01011
1.000
10011
1.200
11011
1.400
00100
0.825
01100
1.025
10100
1.225
11100
1.425
00101
0.850
01101
1.050
10101
1.250
11101
1.450
00110
0.875
01110
1.075
10110
1.275
11110
1.475
00111
0.900
01111
1.100
10111
1.300
11111
1.500
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DETAILED DESCRIPTION
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