CAT6217-180TDGT3 datasheet(2/9 Pages) ONSEMI

Part #	CAT6217-180TDGT3

Description	150 mA CMOS LDO Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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Figure 1. Typical Application Circuit

VIN

BYP

EN

VOUT

GND

OFF ON

1 μF

2.3 V

to 5.5 V

1 μF

10 nF

CAT6217

Figure 2. CAT6217 Functional Block Diagram

BYP

EN

GND

VIN

VOUT

Shutdown

Switch

LDO

Reference

CIN

VIN

VOUT

COUT

CBYP (Optional)

VIN

VOUT

Pin Function

VIN is the supply pin for the LDO. A small 1

mF ceramic

bypass capacitor is required between the VIN pin and ground

near the device. When using longer connections to the power

supply, CIN value can be increased without limit. The

operating input voltage range is from 2.3 V to 5.5 V.

EN is the enable control logic (active high) for the regulator

output. It has a 2.5 M

W pull−down resistor, which assures

that if EN pin is left open, the circuit is disabled.

VOUT is the LDO regulator output. A small 1

mF ceramic

bypass capacitor is required between the VOUT pin and

ground for stability. For better transient response, its value

can be increased to 4.7

mF.

The capacitor should be located near the device. ESR

domain is 5 m

W to 500 mW. VOUT can deliver a maximum

guaranteed current of 150 mA. A 250

W internal shutdown

switch discharges the output capacitor in the no−load

condition.

GND is the ground reference for the LDO. The pin must be

connected to the ground plane on the PCB.

BYP is the reference bypass pin. An optional 0.01

mF

capacitor can be connected between BYP pin and GND to

reduce the output noise and enhance the PSRR at high

frequency.

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter

Rating

Unit

VIN

0 to 6.5

V

VEN, VOUT

−0.3 to VIN + 0.3

V

Junction Temperature, TJ

+150

_C

Power Dissipation, PD

Internally Limited (Note 1)

mW

Storage Temperature Range, TS

−65 to +150

_C

Lead Temperature (soldering, 5 sec.)

260

_C

ESD Rating (Human Body Model)

3

kV

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

Table 2. RECOMMENDED OPERATING CONDITIONS (Note 2)

Parameter

Range

Unit

VIN

2.3 to 5.5

V

VEN

0 to VIN

V

Junction Temperature Range, TJ

−40 to +125

_C

Package Thermal Resistance (SOT23−5), θJA

235

_C/W

NOTE: Typical application circuit with external components is shown above.

1. The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax − TA)/qJA. Exceeding the maximum allowable

power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.

2. The device is not guaranteed to work outside its operating rating.

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CAT6217-180TDGT3 Datasheet(PDF) 2 Page - ON Semiconductor

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