step-down converter. ST1PS01 Datasheet

ST1PS01 converter. Datasheet pdf. Equivalent


Part ST1PS01
Description 400mA nano-quiescent synchronous step-down converter
Feature ST1PS01 Datasheet 400 mA nano-quiescent synchronous step-down converter with digital voltage selecti.
Manufacture STMicroelectronics
Datasheet
Download ST1PS01 Datasheet


ST1PS01 Datasheet 400 mA nano-quiescent synchronous step-dow ST1PS01 Datasheet
Recommendation Recommendation Datasheet ST1PS01 Datasheet




ST1PS01
ST1PS01
Datasheet
400 mA nano-quiescent synchronous step-down converter with digital voltage
selection and Power Good
Product status link
ST1PS01
Product summary
ST1PS01AJR
Order code
ST1PS01DJR
ST1PS01EJR
1.9 V, 2.0 V, 2.1 V,
2.8 V (A vers.)
Output voltages
1.8 V, 2.3 V, 2.5 V,
2.8 V (D vers.)
1.8 V, 2.7 V, 3.0 V,
3.3 V (E vers.)
Package
Flip-Chip
(1.11x1.41mm)
400 µm pitch
Features
• 500 nA input quiescent current at VIN=3.6 V (not switching)
• 94% typical efficiency at 1 mA load (VIN=3.6 V, VOUT=3.3 V)
• 100% duty cycle
• 1.8 V to 5.5 V input operating range
• Undervoltage lockout: 1.57 V (VIN 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: 1.8 V to 3.3 V
• Output voltage Power Good
• ±1.5% output voltage accuracy (VOUT, TA=25 °C)
• Dynamic output voltage selection (D0, D1)
• Available in Flip-Chip package
Applications
• Wearable applications
• Personal tracking monitors
• Smart watches, sport bands
• Energy harvesting, wireless sensors
• Wearable and fitness accessories
• Industrial sensors, portable low power devices
• Single cell Li-Ion battery applications
• Bluetooth® low energy
• Zigbee
Description
The ST1PS01 is a nano-quiescent miniaturized synchronous step-down converter,
which is able to provide up to 400 mA output current with an input voltage ranging
from 1.8 V to 5.5 V. 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 VOUT from 1.8 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.
DS12799 - Rev 2 - December 2018
For further information contact your local STMicroelectronics sales office.
www.st.com



ST1PS01
ST1PS01
Application schematic
1 Application schematic
VIN
CIN
H/L
H/L
Figure 1. ST1PS01 application schematic
EN PGOOD
VIN
D0 SW
VOUT
D1
GND
ST1PS01
RPU
L VOUT
COUT
Vcc GPIO
Low voltage system
GND
Component
CIN
COUT
L
RPU
Table 1. Typical external components
Description
Ceramic capacitor with low ESR values
Ceramic capacitor with low ESR values
Inductor
Pull-up resistor
Value
10 µF
10 µF
2.2 µH
1 MΩ
Size - imperial (metric)
0603 (1608)
0603 (1608)
0806 (2016)
0402 (1005)
DS12799 - Rev 2
page 2/20







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