MCP1603T-330I/OS Microchip Technology Inc., MCP1603T-330I/OS Datasheet

MCP1603T-330I/OS

Manufacturer Part Number

MCP1603T-330I/OS

Description

Regulator, Sync-Buck, 2.7-5.5V In, 3.3V 0.5A Out, TSOT-5

Manufacturer

Microchip Technology Inc.

Type

Regulatorr

Datasheet

1.MCP1603T-ADJIOS.pdf (7 pages)

Specifications of MCP1603T-330I/OS

Current, Input Bias

0.1 nA

Current, Output

500 mA

Current, Supply

45 μA

Frequency, Oscillator

2 MHz

Package Type

Regulation, Line

0.3 %/V

Regulation, Load

0.35 %

Regulator Type

Buck

Temperature, Operating, Range

-40 to +85 °C

Voltage, Input

5.5 V

Voltage, Output

3.3 V

04+

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

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Features

• Over 90% Typical Efficiency

• Output Current Up To 500 mA

• Low Quiescent Current = 45 µA, typical

• Low Shutdown Current = 0.1 µA, typical

• Adjustable Output Voltage:

• Fixed Output Voltage:

• 2.0 MHz Fixed-Frequency PWM (Heavy Load)

• Automatic PWM to PFM Mode Transition

• 100% Duty Cycle Operation

• Internally Compensated

• Undervoltage Lockout (UVLO)

• Overtemperature Protection

• Space Saving Packages:

Applications

• Cellular Telephones

• Portable Computers

• Organizers / PDAs

• USB Powered Devices

• Digital Cameras

• Portable Equipment

• +5V or +3.3V Distributed Systems

Package Types

- 0.8V to 4.5V

- 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V

- 5-Lead TSOT

- 8-Lead 2X3 DFN

SHDN

GND

2.0 MHz, 500 mA Synchronous Buck Regulator

MCP1603

5-Lead TSOT

OUT

SHDN

GND

MCP1603L

General Description

The MCP1603 is a high efficient, fully integrated

500 mA synchronous buck regulator whose 2.7V to

5.5V input voltage range makes it ideally suited for

applications powered from 1-cell Li-Ion or 2-cell/3-cell

NiMH/NiCd batteries.

At heavy loads, the MCP1603 operates in the 2.0 MHz

fixed frequency PWM mode which provides a low

noise, low output ripple, small-size solution. When the

load is reduced to light levels, the MCP1603

automatically changes operation to a PFM mode to

minimize quiescent current draw from the battery. No

intervention is necessary for a smooth transition from

one mode to another. These two modes of operation

allow the MCP1603 to achieve the highest efficiency

over the entire operating current range.

The MCP1603 is available with either an adjustable or

fixed output voltage. The available fixed output voltage

options are 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. When a

fixed option is used, only three additional small external

components are needed to form a complete solution.

Couple this with the low profile, small-foot print

packages and the entire system solution is achieved

with minimal size.

Additional

overtemperature, and overcurrent protection.

OUT

protection

MCP1603

SHDN

OUT

8-Lead 2x3 DFN

features

include:

DS22042A-page 1

GND

UVLO,

Related parts for MCP1603T-330I/OS

MCP1603T-330I/OS Summary of contents

Page 1

... SHDN OUT MCP1603 © 2007 Microchip Technology Inc. MCP1603 General Description The MCP1603 is a high efficient, fully integrated 500 mA synchronous buck regulator whose 2.7V to 5.5V input voltage range makes it ideally suited for applications powered from 1-cell Li-Ion or 2-cell/3-cell NiMH/NiCd batteries. At heavy loads, the MCP1603 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-size solution ...

Page 2

... Note 1 µA SHDN = GND µA SHDN = OUT % 2. 2. µ 2. Falling IN mV °C Note 4, Note 5 °C Note 4, Note 5 ≥ 0.5V. OUT , θ Exceeding the maximum pin to the V pin, and from the L pin © 2007 Microchip Technology Inc. ...

Page 3

... GND pin. In cases where these diodes are forward-biased, the package power dissipation limits must be adhered to. Thermal protection is not able to limit the junction temperature for these cases. 6: The current limit threshold is a cycle-by-cycle peak current limit. © 2007 Microchip Technology Inc. = SHDN = 3.6V OUT range of -40° ...

Page 4

... JA θ — 84.5 — 2.7V to 5.5V IN Units Conditions °C Steady State °C °C Transient °C/W Typical 4-layer Board with Internal Ground Plane °C/W Typical 4-layer Board with Internal Ground Plane and 2-Vias in Thermal Pad © 2007 Microchip Technology Inc. ...

Page 5

... Package may have one or more exposed tie bars at ends. 3. Package is saw singulated. 4. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. © 2007 Microchip Technology Inc ...

Page 6

Page 7

... MCP1603T-120I/OS: 1.20V Buck Reg., 5LD-TSOT pkg. MCP1603T-180I/OS: 1.80V Buck Reg., 5LD-TSOT pkg. MCP1603T-250I/OS: 2.50V Buck Reg., 5LD-TSOT pkg. MCP1603T-330I/OS: 3.30V Buck Reg., 5LD-TSOT pkg. MCP1603T-ADJI/OS: Adj. Buck Reg., 5LD-TSOT pkg. MCP1603LT-250I/OS:2.50V Buck Reg., 5LD-TSOT pkg. MCP1603LT-ADJI/OS:Adj. Buck Reg., 5LD-TSOT pkg. ...

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