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ISL8010

Monolithic 600mA Step-Down Regulator with Low Quiescent Current

Intersil 

ISL8010

Absolute Maximum Ratings (TA = 25°C)

VIN, VDD, PG to SGND . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V

LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VIN + +0.3V)

SYNC, EN, VO, FB to SGND . . . . . . . . . . . . . -0.3V to (VIN + +0.3V)

PGND to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V

Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mA

Thermal Information

Thermal Resistance (Typical)

θJA (°C/W)

MSOP10 Package (Note 1) . . . . . . . . . . . . . . . . . . .

130

Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are

at the specified temperature and are pulsed tests, therefore: TJ = TC = TA

NOTE:

1. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

Tech Brief TB379.

Electrical Specifications VDD = VIN = VEN = 3.3V, C1 = C2 = 10µF, L = 1.8µH, VO = 1.8V (as shown in Typical Application Diagram),

TA = -40°C to 85°C unless otherwise specified.

PARAMETER

DESCRIPTION

CONDITIONS

MIN TYP MAX UNIT

DC CHARACTERISTICS

VFB

Feedback Input Voltage

PWM Mode

IFB

Feedback Input Current

VIN, VDD

Input Voltage

TA = 25°C only

VIN,OFF

Minimum Voltage for Shutdown

VIN falling, TA = 25°C only

VIN,ON

Maximum Voltage for Start-up

VIN rising

IS

Input Supply Quiescent Current

Active - PFM Mode

VSYNC = 0V

Active - PWM Mode

VSYNC = 3.3V

IDD

Supply Current

PWM, VIN = VDD = 5V

EN = 0, VIN = VDD = 5V

RDS(ON)-PMOS PMOS FET Resistance

VDD = 5V, TA = 25°C

RDS(ON)-NMOS NMOS FET Resistance

VDD = 5V, TA = 25°C

ILMAX

Current Limit

TOT,OFF

Over-temperature Threshold

T rising

TOT,ON

Over-temperature Hysteresis

T falling

IEN, ISYNC

EN, SYNC Current

VEN, VRSI = 0V and 3.3V

VEN1, VSYNC1 EN, SYNC Rising Threshold

VDD = 3.3V

VEN2, VSYNC2 EN, SYNC Falling Threshold

VDD = 3.3V

VPG

Minimum VFB for PG, WRT Targeted VFB VFB rising

Value

VFB falling

VOLPG

PG Voltage Drop

ISINK = 3.3mA

AC CHARACTERISTICS

790

800

810

mV

100

nA

2.5

5.5

V

2

2.2

V

2.2

2.4

V

120

145

µA

6.5

7.5

mA

400

500

µA

0.1

3

µA

70

100

mΩ

45

75

mΩ

1.2

A

145

°C

130

°C

-1

1

µA

2.4

V

0.8

V

95

%

86

%

35

70

mV

FPWM

tSS

PWM Switching Frequency

Soft-start Time

1.25

1.4

650

1.6

MHz

µs

2

FN6191.0

September 27, 2005

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