MIC2506BMTR Micrel Semiconductor, MIC2506BMTR Datasheet

MIC2506BMTR

Manufacturer Part Number

MIC2506BMTR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC2505-1BMTR.pdf (12 pages)

Specifications of MIC2506BMTR

Date_code

03+

Packing_info

SOIC-08L

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General Description

The MIC2505, MIC2505-1, MIC2505-2, and MIC2506 are

single and dual integrated high-side power switches that

consist of TTL compatible control/enable inputs, a charge

pump, and protected N-channel MOSFETs. The MIC2505/6

family can be used instead of separate high-side drivers and

MOSFETs in many low-voltage applications.

The MIC2505/6 family controls voltages ranging from 2.7V to

7.5V. The MIC2505-series can deliver at least 2A continuous

current while the MIC2506 can deliver at least 1A continuous

current from each output. A slow turn-on feature prevents

high inrush current when switching capacitive loads. The

internal control circuitry is powered from the same 2.7V to

7.5V. Within the device’s input range, outputs can be forced

higher than the input voltage when disabled.

Multipurpose open-drain fault flag outputs indicate overcur-

rent limiting, open-load detection (except MIC2505-1 and -2

versions), thermal shutdown, or undervoltage lockout for

each channel.

Overcurrent limiting is internally fixed and requires no exter-

nal components.

Open-load detection is active when the switch is off. When

off, a normal load pulls the output pin low. If the load is open,

an optional, external, high-value resistor pulls the output pin

high, triggering the fault flag. MIC2505-1 and -2 versions are

tailored to Universal Serial Bus (USB) applications and do not

include open-load detection.

Thermal shutdown turns off the output if the die temperature

exceeds approximately 135 C. If enabled, the switch auto-

matically restarts when the temperature falls 10 C.

Undervoltage lockout (UVLO) shuts off the output if the

supply drops below 2.3V typical and reenables the output

when the supply exceeds 2.5V typical.

Typical Applications

April 2004

MIC2505/2506

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

OFF

FAULT

Resistor

Pull-up

(100k)

Single and Dual Switch/Circuit Breakers with Open-Load Detection and Fault Output

Optional

Output Delay

Capacitor

CTL

FLG

GND

GATE

MIC2505BM

OUT

2.7V to 7.5V

0.1µF

Detect Resistor

(MIC2505BN or

100k

MIC2505BM

Open Load

Optional

only)

FAULT A

FAULT B

A OFF

B OFF

A ON

B ON

(100k each)

Features

• Low MOSFET on resistance to 2.7V

• 2.7V to 7.5V input

• 110 A typical on-state supply current

• 1 A typical off-state supply current

• Output can be forced higher than input (off-state)

• Current limit

• Thermal shutdown

• 2.5V undervoltage lockout (UVLO)

• Open-load detection

• Open-drain fault flag

• 5ms (slow) turn-on and fast turnoff

• Logic-level control/enable input

Applications

• USB Power Distribution

• 3.3V and 5V power management

• PC Card card inrush limiting switch

• Hot plug-in power supplies

• Battery-charger circuits

Resistors

Pull-up

Single 2A / Dual 1A / High-Side Switches

30m typical at 5V (MIC2505-series)

35m typical at 3.3V (MIC2505-series)

75m typical at 5V (each MIC2506 output)

80m typical at 3.3V (each MIC2506 output)

(MIC2505BN/M and MIC2506BN/M only)

CTL A OUT A

FLG A

FLG B

CTL B OUT B

MIC2506BM

MIC2505/2506

GND

2.7V to 7.5V

0.1µF

100k 100k

Optional

Open Load

Detect Resistors

M9999-042704

Micrel

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