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ST1PS01EJR

400 mA nano-quiescent synchronous step-down converter with digital voltage selection and Power Good

Manufacturer:

STMicroelectronics, Inc
Mfr.Part #:

ST1PS01EJR
Datasheet:

ST1PS01EJR Datasheet (PDF)
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
Output Type:

Fixed
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ST1PS01EJR General Description

This converter is specifically designed for applications where high efficiency, PCB size and thickness are the key factors. The output voltage can be set using two digital control inputs, a VOUTfrom 0.625 V to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the ST1PS01 reaches very high efficiency conversion using just a 2.2 µH inductor and two small capacitors. Advanced design circuitry is implemented to minimize the quiescent current. The device is available in Flip-Chip package.Evaluation board based on ST1PS01AJR 400 mA nano.LoRa® IoT tracker.Evaluation board based on the ST1PS01EJR 400 mA .Evaluation board based on ST1PS01DJR 400 mA nano.

Key Features

500 nA input quiescent current at V_IN=3.6 V (not switching)
94% typical efficiency at 1 mA load (V_IN=3.6 V, V_OUT=3.3 V)
100% duty cycle
1.8 V to 5.5 V input operating range
Undervoltage lockout: 1.57 V (V_IN falling, typ.)
Up to 400 mA output current capability
Low power control operation for the best efficiency
Embedded soft-start circuit
Tiny external components: L=2.2 µH typ.
Selectable output voltages: 0.625 V to 3.3 V
Output voltage Power Good
±1.5% output voltage accuracy (V_OUT, T_A = 25 °C)
Dynamic output voltage selection (D0, D1)
Available in Flip-Chip package

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	-
Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Fixed
Number of Outputs	1	Voltage - Input (Min)	1.8V
Voltage - Input (Max)	5.5V	Voltage - Output (Min/Fixed)	1.8V, 2.7V, 3V, 3.3V
Voltage - Output (Max)	-	Current - Output	400mA
Frequency - Switching	2MHz	Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 85°C (TA)	Mounting Type	Surface Mount
Base Product Number	ST1PS01

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Ratings and Reviews

D**f 10/05/2023

Shipping 5 days, thank you

C**n 12/09/2022

The order was received in two weeks. I order not the first time-excellent "vintage" handles from real carbolite with brass bushings. "In life" look better than in the photo. The seller, as always-5 stars!

H**n 05/24/2021

Female voice commentator

L**s 05/26/2020

Fast shipping, product arrived without uszkodzen