A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 30

• 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

and 40 °C/W respectively.
L798x
The L798x is a step-down switching regulator family with an embedded, 3.7 A
(minimum) current-limited power MOSFET, so it is able to deliver up to 3 A to the
load depending on the application conditions. The input voltage can range from 4.5
to 28 V, while the output voltage can be set starting from 0.6 V to V
a minimum set of external components, the device includes an internal 250 kHz
switching frequency oscillator that can be externally adjusted up to 1 MHz. The
QFN and the HSOP packages with exposed pad reduce R
Key features
Q
Q
Q
Q
Q
Q
Q
Q
Application example for MR16 LED retrofit
30
Q
Q
Q
Q
Q
Q
Q
Q
Up to 3 A output current in small QFN3x3-8L or HSOP8 package
P-channel power MOSFET: no bootstrap capacitor and 100% maximum duty
cycle
Wide input voltage range: 4.5 up to 28 V
Closed-loop soft start
High switching frequency (250 kHz, adjustable up to 1 MHz) with
synchronization capability (180° out of phase)
Embedded protection features (overcurrent, over-temperature)
Typical
Alternative topologies: inverting buck-boost, positive buck boost
RDS(on)
: 180 mΩ
L7980
thJA
down to 60 °C/W
IN
. Only requiring
Key benefits
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Monolithic and flexible solution
Wide input voltage range
compatible with MR16 standard
High efficiency
Minimum external component count
Suitable for MLCC output filter
VFQFPN8 3 x 3
exposed pad
HSOP8