LP3907TLX-JJCP/NOPB National Semiconductor, LP3907TLX-JJCP/NOPB Datasheet - Page 38
![IC PMU DUAL DC/DC REG 25USMD](/photos/6/99/69997/tla25aaa_sml.jpg)
LP3907TLX-JJCP/NOPB
Manufacturer Part Number
LP3907TLX-JJCP/NOPB
Description
IC PMU DUAL DC/DC REG 25USMD
Manufacturer
National Semiconductor
Series
PowerWise®r
Type
Step-Down (Buck)r
Datasheet
1.LP3907SQ-JXQXNOPB.pdf
(46 pages)
Specifications of LP3907TLX-JJCP/NOPB
Topology
Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
Function
Any Function
Number Of Outputs
4
Frequency - Switching
2.1MHz
Voltage/current - Output 1
1.2V, 1A
Voltage/current - Output 2
1.8V, 600mA
Voltage/current - Output 3
1.2V, 300mA
W/led Driver
No
W/supervisor
No
W/sequencer
Yes
Voltage - Supply
2.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
25-MicroSMD
Current - Output
300mA, 600mA, 1A
Voltage - Output
1.2V, 1.8V
Voltage - Input
2.8 ~ 5.5 V
Power - Output
1.43W
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LP3907TLX-JJCP
www.national.com
LDO1 CONTROL REGISTER (LDO1VCR) – 0X39
This register allows the user to program the output target volt-
age of LDO 1.
For “JJ11” voltage options LDO1 has a fixed output voltage
of 2.85V.
Name
Access
Data
Reset
Reserved
D7-5
000
—
—
5’h1A–5’h1F
Factory-Programmed Default
LDO1 Output voltage (V)
5’h0C
5’h0D
5’h0A
5’h0B
5’h0E
5’h0F
5’h00
5’h01
5’h02
5’h03
5’h04
5’h05
5’h06
5’h07
5’h08
5’h09
5’h10
5’h11
5’h12
5’h13
5’h14
5’h15
5’h16
5’h17
5’h18
5’h19
LDO1_OUT
D4-0
R/W
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.5
38
LDO2 CONTROL REGISTER (LDO2VCR) – 0X3A
This register allows the user to program the output target volt-
age of LDO 2.
For “JJ11” voltage options LDO2 has a fixed output voltage
of 2.85V.
Name
Access
Data
Reset
Reserved
D7-5
000
—
—
5’h1A–5’h1F
Factory-Programmed Default
LDO2 Output voltage (V)
5’h0A
5’h0B
5’h0C
5’h0D
5’h0E
5’h00
5’h01
5’h02
5’h03
5’h04
5’h05
5’h06
5’h07
5’h08
5’h09
5’h0F
5’h10
5’h11
5’h12
5’h13
5’h14
5’h15
5’h16
5’h17
5’h18
5’h19
LDO2_OUT
D4-0
R/W
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.5