A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 28

• Manufacturer Part Number: A5974DTR
• Description: IC BUCK ADJ 2.5A 8SOIC
• Manufacturer: STMicroelectronics
• Series: -r
• Type: Step-Down (Buck)r

Specifications of A5974DTR

• Internal Switch(s): -
• Synchronous Rectifier: -
• Number Of Outputs: -
• Voltage - Output: 1.235 V ~ 35 V
• Current - Output: 2.5A
• Frequency - Switching: 250kHz
• Voltage - Input: 4 V ~ 36 V
• Operating Temperature: -
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11424-2

L6925D/26/28
This series of DC-DC monolithic regulators is specifically designed for extremely
high efficiency. The L692x supply voltage can be as low as 2 V, allowing its use in
applications supplied by a single Li-ion cell. The output voltage can be adjusted
using an external divider down to 0.6 V.
The duty cycle can saturate to 100 %, allowing low drop-out operation.
Low-consumption mode can be selected under light load conditions, allowing
switching losses to be reduced. Other features include power good, overvoltage
protection, short-circuit protection and thermal shutdown (150 °C).
Key features
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Application example
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EVAL6926D
EVAL6928D
EVAL6928Q1
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Input voltage range: 2 to 5.5 V (2.7 V for L6925D)
Output voltage: adjustable 0.6 V to V
Internal synchronous switch
Switching frequency: 1.4 MHz (L6928) to 600 kHz (L6925D/6), with selectable
low-noise or low-consumption mode
Output current: up to 800 mA
High efficiency > 90%
Low drop-out operation up to 100% duty cycle
Embedded protection features
Sales code
V IN = 2 V to 5.5 V
Board
GND
RUN
VCC
L6926 high-efficiency monolithic synchronous
step-down regulator evaluation board
L6928D high-efficiency monolithic synchronous
step-down regulator evaluation board
L6928Q1 high-efficiency monolithic synchronous
step-down converter evaluation board
IN
8
3
7
SYNCH
2
L6928
Conventional buck topology
COMP
4
Description
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6
5
OUT
PGOOD
FB
Key benefits
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Monolithic and flexible solution
High efficiency
MSOP8
AN1882: Designing with the L6926,
high-efficiency monolithic synchronous
step-down regulator
AN1893: Designing with L6925D,
high-efficiency monolithic synchronous
step-down regulator
AN2115: Designing an application with
the L6928, high-efficiency monolithic
synchronous step-down regulator
V SENSE
Technical documents
VFQFPN8