LP3907SQX-PJXIX/NOPB National Semiconductor, LP3907SQX-PJXIX/NOPB Datasheet - Page 17

• Manufacturer Part Number: LP3907SQX-PJXIX/NOPB
• Description: IC BUCK SYNC 1.2V/3.3V 24LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Step-Down (Buck)r

Specifications of LP3907SQX-PJXIX/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: 3.3V, 600mA
• Voltage/current - Output 3: 1.8V, 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: 24-LLP
• Current - Output: 300mA, 600mA, 1A
• Voltage - Output: 1.2V, 3.3V
• 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: LP3907SQX-PJXIX

Typical Performance Characteristics
V
IN
= 3.6V, T
V
OUT
V
IN
A
= 1.2V, I
= 25°C, V
= 3.6 – 4.2V, V
Load Transient Response
Line Transient Response
Start up into PWM Mode
V
OUT
LOAD
OUT
= 1.2V, 1.0A load
= 300–500mA (PWM Mode)
= 1.2V unless otherwise noted
OUT
= 1.2V, 250mA load
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V
OUT
V
= 1.2V, I
IN
= 3.6 – 4.2V, V
Mode Change by Load Transient
Line Transient Response
V
LOAD
Start up into PWM Mode
OUT
= 50–150mA (PFM to PWM Mode)
= 3.3 V, 600mA load
OUT
= 3.3V, 250 mA load
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