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TPS78550QWDRBRQ1

Automotive, 1-A high-accuracy adjustable low-dropout (LDO) linear regulator

Manufacturer: Texas Instruments, Inc
Mfr.Part #: TPS78550QWDRBRQ1
Datasheet: TPS78550QWDRBRQ1 Datasheet (PDF)
Package/Case: SON-8
Product Type: Power Management ICs
RoHS:
Lifecycle: Active
EDA/CAD Models: Request Free CAD Models for TPS78550QWDRBRQ1

Email: [email protected]

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Tel: +852 95804164

TPS78550QWDRBRQ1 General Description

The TPS785-Q1 ultra low-dropout regulator (LDO) is a small, low quiescent current LDO that can source 1 A with excellent line and load transient performance.

The low output noise and great PSRR performance make the device suitable to power-sensitive analog loads. The TPS785-Q1 is a flexible device for post regulation because this device supports an input voltage range from 1.7 V to 6.0 V and offers an adjustable output range of 1.2 V to 5.5 V. The device also features fixed output voltages from 0.65 V to 5.0 V for powering common voltage rails.

The TPS785-Q1 offers foldback current limit to reduce power dissipation during a over current condition. The EN input helps with power sequencing requirements of the system. The internal soft-start provides a controlled start up reducing the inrush current allowing for lower input capacitance to be used.

The TPS785-Q1 provides an active pulldown circuit to quickly discharge output loads when disabled.

Key Features

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Device junction temperature: –40°C to +150°C, T_J
Input voltage range: 1.7 V to 6.0 V
Available output voltages:
- Adjustable option: 1.2 V to 5.5 V
- Fixed options: 0.65 V to 5.0 V
Output accuracy: 0.5% typical, 1.7% maximum
Low I_Q: 25 µA (typical)
Ultra-low dropout:
- 315 mV (max) at 1 A (3.3 V_OUT)
Internal 550 µs soft-start time to reduce inrush current
Active output discharge
Packages:
- 3-mm × 3-mm wettable flank VSON (8)
- 5-pin TO-252, R_θJA = 31.6°C/W

Specifications

Output options	Adjustable Output, Fixed Output	Iout (max) (A)	1
Vin (max) (V)	6	Vin (min) (V)	1.7
Vout (max) (V)	5.5	Vout (min) (V)	0.75
Fixed output options (V)	0.75, 1, 1.1, 1.2, 1.8, 2.5, 3.3, 5	Noise (µVrms)	30
Iq (typ) (mA)	0.025	Thermal resistance θJA (°C/W)	31.6, 50.3
TI functional safety category	Functional Safety-Capable	Rating	Automotive
Load capacitance (min) (µF)	1	Regulated outputs (#)	1
Features	Enable, Wettable flanks package	Accuracy (%)	0.5
PSRR at 100 KHz (dB)	45	Dropout voltage (Vdo) (typ) (mV)	315
Operating temperature range (°C)	-40 to 150	feature-type
feature-number-of-outputs	1	feature-polarity	Positive
feature-accuracy-		feature-process-technology
feature-output-type	Fixed	feature-output-voltage-v	5
feature-maximum-output-current-a	1	feature-minimum-input-voltage-v	1.7
feature-maximum-input-voltage-v	6	feature-maximum-dropout-voltage-current-v
feature-line-regulation		feature-load-regulation
feature-maximum-power-dissipation-mw		feature-packaging
feature-rad-hard		feature-pin-count	8
feature-supplier-package	VSON EP	feature-standard-package-name
feature-cecc-qualified		feature-esd-protection
feature-escc-qualified		feature-military	No
feature-aec-qualified	Yes	feature-aec-qualified-number	AEC-Q100
feature-eccn-code	EAR99	feature-svhc
feature-svhc-exceeds-threshold	No

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Ratings and Reviews

J**a 04/24/2024

Kamchatka 58 days. Seller recommend.

L**n 07/07/2020

Nice to know the diameter is almost 8mm. Dropping resistors are R: 330 ohm, G: 220 ohm, G: 47 ohm. Brightness variation of each LED at 3.3V from Raspberry Pi's GPIO is relatively good, yellow is a bit brighter and green is a bit dimmer, though.

H**n 05/25/2020

Package arrived on time thanks

Z**y 04/10/2020

I'll test tomorrow. Then sign off