TPS54122RHLT datasheet(8/40 Pages) TI1

Part #	TPS54122RHLT

Description	Dual-Output, 3-A, QuietSupply With Integrated DC-DC Converter and Low-Noise LDO

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Manufacturer	TI1 [Texas Instruments]

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8 / 40 page

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V

BIAS - VOUT (V)

125°C

25°C

-40°C

C005

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LDOIN - VOUT (V)

1 kHz

100 kHz

1 MHz

10 MHz

C022

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0.784

0.792

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0.808

0.816

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LDOIN - VOUT (V)

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25°C

-40°C

C002

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BIAS - VOUT (V)

125°C

25°C

-40°C

C004

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8

TPS54122

SBVS221B – NOVEMBER 2013 – REVISED AUGUST 2016

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Product Folder Links: TPS54122

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6.8 Typical Characteristics

At VVIN = VBIAS= VLDOEN= 5 V, VLDOIN = DC-DC_OUT = 2.1 V, VO = 1.8 V, IO = 50 mA, VEN = floating, COUT = 100 μF, and CSS =

CNR = 0.01 µF (see Figure 27), unless otherwise noted.

NOTE: Y-axis shows a 1% VOUT per division.

Figure 1. Load Regulation

NOTE: Y-axis shows a 1% VOUT per division.

Figure 2. Load Regulation Under Light Loads

NOTE: Y-axis shows a 1% VOUT per division.

Figure 3. LDOIN Line Regulation

NOTE: Y-axis shows a 1% VOUT per division.

Figure 4. LDO Bias Line Regulation

IO = 3 A

Figure 5. LDO Dropout Voltage vs LDO Bias Voltage

IO = 500 mA

Figure 6. LDO Power-Supply Ripple Rejection vs

LDO Dropout Voltage

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