A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 18

• 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

ST8R00
The ST8R00 family of synchronous step-up DC-DC converters with current output
cut-off function provides up to 1 A over an input voltage range of 4 to 6 V and an
output voltage range of 6 to 12 V.
The high switching frequency (1.2 MHz) allows the use of tiny surface-mount
components.
In addition to the resistor divider to set the output voltage value, only an inductor
and two capacitors are required. A low output ripple is guaranteed by the current-
mode PWM topology and by the use of low ESR surface-mounted ceramic
capacitors.
The device is available in two versions: burst mode (ST8R00) and continuous mode
(ST8R00W) operation.
Key features
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Application example
18
STEVAL-ISA48V2
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Very low supply current: 500 μA (typ)
Output voltage: adjustable from 6 to 12 V
Output voltage accuracy: ±2%
Output current: up to 1 A
Very small DFN8 (4x4 mm) package
Sales code
V I
Board
1 A/adjustable V
ST8R00
INH
GND
IN
ST8R00
OUT
PWM synchronous step-up DC-DC converter based on
PGND
LX
Description
OUT
FB
Key benefits
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Efficiency up to 90%
Only a few external components
AN2627: ST8R00 synchronous boost
converter with output current cut-off
function
DFN 4x4 mm
Technical documents