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LM27762DSST

12 Terminals 2.7V 12-Pin LM2776 DC DC Voltage Regulator SWITCHED CAPACITOR CONVERTER 2 - Dual Outputs 1.7MHz~2.3MHz Tape & Reel (TR) 250mA 12-WFDFN Exposed Pad


  • Manufacturer: Texas Instruments
  • Origchip NO: 815-LM27762DSST
  • Package: 12-WFDFN Exposed Pad
  • Datasheet: PDF
  • Stock: 758
  • Description: 12 Terminals 2.7V 12-Pin LM2776 DC DC Voltage Regulator SWITCHED CAPACITOR CONVERTER 2 - Dual Outputs 1.7MHz~2.3MHz Tape & Reel (TR) 250mA 12-WFDFN Exposed Pad (Kg)

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Details

Tags

Parameters
Factory Lead Time 6 Weeks
Lifecycle Status ACTIVE (Last Updated: 3 days ago)
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 12-WFDFN Exposed Pad
Number of Pins 12
Operating Temperature -40°C~85°C TA
Packaging Tape & Reel (TR)
JESD-609 Code e4
Pbfree Code yes
Part Status Active
Moisture Sensitivity Level (MSL) 2 (1 Year)
Number of Terminations 12
ECCN Code EAR99
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Pitch 0.5mm
Base Part Number LM2776
Function Step-Up/Step-Down
Number of Outputs 2 - Dual
Voltage - Input (Max) 5.5V
Output Type Adjustable
Voltage - Input (Min) 2.7V
Input Voltage-Nom 5V
Analog IC - Other Type SWITCHED CAPACITOR CONVERTER
Output Configuration Positive and Negative (Dual Rail)
Current - Output 250mA
Quiescent Current 390μA
Max Output Voltage 5V
Voltage - Output (Min/Fixed) -5V 1.5V
Topology Charge Pump
Frequency - Switching 1.7MHz~2.3MHz
Control Technique PULSE FREQUENCY MODULATION
Synchronous Rectifier No
Min Output Voltage 1.5V
Voltage - Output (Max) -1.5V 5V
Height 800μm
Length 2mm
Width 3mm
Thickness 750μm
RoHS Status ROHS3 Compliant
Lead Free Lead Free

Description


The LM27762DSST provides low-noise positive and negative outputs that can be adjusted between ±1.5 and ±5 volts. The input voltage ranges from 2.7 to 5.5 V, with a maximum output current of ±250 mA. The LM27762DSST delivers outstanding performance for power amplifier and DAC bias, as well as other high-current, low-noise negative voltage needs, with an operating current of just 390 μA and a typical shutdown current of 0.5 μA. With only a few external components, the gadget provides a tiny solution size.

A regulated inverting charge pump is used to generate negative voltage, which is then followed by a low-noise negative LDO. The LM27762DSST device's inverting charge pump runs at a 2-MHz (typical) switching frequency to reduce output resistance and voltage ripple. A low-noise positive LDO generates positive voltage from the input.

The LM27762DSST has separate enable inputs for positive and negative outputs. For unique system power-sequence needs, these outputs provide independent timing for the positive and negative rails. Enable inputs can also be connected to the input voltage by shorting them together. The LM27762DSST features a Power Good feature that may be turned on or off.



Features


? 390-μA Quiescent Current (Typical)

? Shutdown Quiescent Current to 0.5 μA (Typical)

? Current Limit and Thermal Protection

? Power Good Pin (Active Low)

? Create a Custom Design Using the LM27762 With the WEBENCH? Power Designer

? 2-MHz Low-Noise Fixed-Frequency Operation

? 2.5-? Inverter Output Impedance, VIN = 5 V

? Negative LDO Dropout Voltage 30 mV at 100 mA, VOUT = –5 V

? Positive LDO with 45-mV Dropout Voltage at 100 mA, VOUT = 5 V

? Generates Low-Noise Adjustable Positive Supply Voltage Between 1.5 V and 5 V and Negative Supply Voltage Between –1.5 V and –5 V

? Input Voltage Range 2.7 V to 5.5 V

? ±250-mA Output Current

? Inverting Charge Pump Followed by Negative LDO



Applications


? Wireless Communication Systems

? Interface Power Supplies

? Handheld Instrumentation

? Hi-Fi Audio Headphone Amplifiers

? Operational Amplifier Power Biasing

? Powering Data Converters