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TI LM27762DSST product image
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TI LM27762DSSTRoHS

Manufacturer
TI
MPN
LM27762DSST
LCSC Part #
C134018
Packaging
WSON-12-EP(2x3)
Customer #
Key Attributes
Integrated low-noise charge pump with positive and negative outputs and LDO
Datasheetpdf iconTI LM27762DSST
In-Stock: 1,173
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QtyUnit PriceTotal Amount
1+$ 1.3257$ 1.33
10+$ 1.1254$ 11.25
30+$ 1.0147$ 30.44
250+$ 0.8909$ 222.73
500+$ 0.8355$ 417.75
1,000+$ 0.8111$ 811.10
Standard Packaging250/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTI
PackagingWSON-12-EP(2x3)
Operating Temperature-40℃~+85℃
FunctionInverted
Frequency - Switching2MHz
FeaturesLow ripple / low noise architecture;Low-power standby;Output short-circuit protection;Overcurrent Protection
Operating Voltage2.7V~5.5V
Output Voltage1.5V~5V;-5V~-1.5V
Output Current250mA
Quiescent Current390uA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging250
Sales UnitPiece

Introduction

AI Translation

The LM27762 provides adjustable, ultra-low noise positive and negative outputs from ±1.5V to ±5V. The input voltage range is from 2.7V to 5.5V, and the output current can reach up to ±250mA. The operating current of the LM27762 is only 390μA, and the typical value of the shutdown current is 0.5μA. Therefore, it can provide ideal performance for power amplifiers, digital-to-analog converter (DAC) biasing, and other high-current, low-noise, negative-voltage applications. This device features a small solution size and requires few external components. The negative voltage is generated by a regulated inverting charge pump, which is followed by a low-noise, negative-voltage LDO. The inverting charge pump of the LM27762 device operates at a switching frequency of 2MHz (typical), which can reduce the output impedance and voltage ripple. The positive voltage is generated from the input of a low-noise positive-voltage LDO. The positive and negative voltage outputs of the LM27762 are equipped with dedicated enable inputs. To meet specific system power sequencing requirements, these outputs support independent positive and negative power rail timing. The enable inputs can also be shorted together and connected to the input voltage. The LM27762 has an optional power-good function.

Features

AI Translation
  • Generates low-noise, adjustable positive supply voltage from 1.5V to 5V and negative supply voltage from -5V to -1.5V
  • Input voltage range: 2.7V to 5.5V
  • ±250mA output current
  • Inverting charge pump followed by a negative LDO
  • 2MHz fixed-frequency, low-noise operation
  • 2.5Ω inverter output impedance at VIN = 5V
  • Negative LDO dropout voltage of 30mV at 100mA, VOUT = -5V
  • Positive LDO dropout voltage of 45mV at 100mA, VOUT = 5V
  • 390μA quiescent current (typical)
  • Quiescent current reduced to 0.5μA in shutdown (typical)
  • Current limiting and thermal protection
  • Power-good pin (active low)
  • Custom design creation using LM27762 with WEBENCH Power Designer

Applications

AI Translation
  • Hi-Fi audio headphone amplifier
  • Op-amp power biasing
  • Data converter power supply
  • Wireless communication systems
  • Interface power supply
  • Handheld instrumentation