RICHTEK

RT7257BHZSP

1.2MHz Step-down type Adjustable 800mV~12V 3A SOIC-8-EP Voltage Regulators - DC DC Switching Regulators RoHS

SOIC-8-EPROHS3 CompliantActive

High Efficiency 3A Synchronous Step-Down Converter

Manufacturer: RICHTEK
Manufacturer part #: RT7257BHZSP
Store part #: C27998
Package / case: SOIC-8-EP
Category: Voltage Regulators - DC DC Switching Regulators
Packaging: Tape & Reel (TR)

Datasheet (PDF)

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4,873 in stock

#C27998

Stock & price checked 6 days ago

Quantity	Unit price	Pack price
1+	₹76.97	₹76.97
10+	₹61.36	₹613.60
30+	₹54.64	₹1,639.20
100+	₹46.41	₹4,641.00
500+	₹42.72	₹21,360.00
1,000+	₹40.55	₹40,550.00

Quantity (min 1)

1 × ₹76.97

₹76.97

excl. GST

₹90.82 incl. 18% GST

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Dispatch in 15-18 working days
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Standard pack: 2,500 per reel

RT7257BHZSP

₹76.97 for 1 + GST

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Specifications

Operating Temperature: -40℃~+125℃@(TJ)
Frequency - Switching: 1.2MHz
Function: Step-down type
Number of Outputs: 1
Features: Adjustable soft-start;Cycle-by-cycle current limiting;Hiccup current limiting;Protection latch;External compensation;Load disconnect;Overcurrent Protection
Output Type: Adjustable
Topology: Buck
Operating Voltage: 4.5V~18V
Switch tube (built-in/external): Built-in
Output Voltage: 800mV~12V
Output Current: 3A
Quiescent Current: 800uA

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
Moisture sensitivity: MSL 3 (168 hours)
ECCN: EAR99
Packaging: Tape & Reel (TR)
Standard pack: 2,500 / Reel
Sold per: Piece
Minimum order: 1
Unit weight: 0.428 g

Overview

The RT7257B is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply. The RT7257B's current mode architecture and external compensation allow the transient response to be optimized over a wide input voltage range and loads. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7257B also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7257B is available in an SOP-8 (Exposed Pad) package.

Applications

Wireless AP/Router
Set-Top-Box
Industrial and Commercial Low Power Systems
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation of High-Performance DSPs

Key features

±1.5% High Accuracy Reference Voltage
4.5V to 18V Input Voltage Range
3A Output Current
Integrated N-MOSFET Switches
Current Mode Control Fixed Frequency Operation: 1.2MHz
Output Adjustable from 0.8V to 12V
Up to 95% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Output Under Voltage Protection
Thermal Shutdown Protection
RoHS Compliant and Halogen Free

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