EP5388QI-E datasheet(4/14 Pages) ENPIRION

Part #	EP5388QI-E

Description	800mA Synchronous Buck Regulator With Integrated Inductor 3mm x 3mm x 1.1mm Package

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Manufacturer	ENPIRION [Enpirion, Inc.]

Direct Link	http://www.enpirion.com

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4 / 14 page

July 2008

EP5388QI

4

www.enpirion.com

Recommended Operating Conditions

PARAMETER

SYMBOL

MIN

MAX

UNITS

Input Voltage Range

VIN

2.4

5.5

V

Output Voltage Range

VOUT

0.603

VIN – 0.5

V

Output Current

IOUT

0

800

mA

Operating Ambient Temperature

TA

-40

+85

°C

Operating Junction Temperature

TJ

-40

+125

°C

Thermal Characteristics

PARAMETER

SYMBOL

TYP

UNITS

Thermal Resistance: Junction to Ambient (0 LFM)*

θJA

100

°C/W

Thermal Shutdown Trip Point

TJ-TP

+150

°C

Thermal Shutdown Trip Point Hysteresis

15

°C

* Based on a 2 oz. copper board and proper thermal design in line with JEDEC EIJ-JESD51 standards.

Electrical Characteristics

NOTE: VIN = 3.6V, CIN = 4.7µF 0603 MLCC, COUT = 47uF 1206 MLCC. TA = -40°C to +85°C unless otherwise noted.

Typical values are at TA = 25°C.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Under-Voltage Lockout

VUVLO

VIN going low to high

2.2

2.3

V

UVLO Hysteresis

0.145

V

VOUT Initial Accuracy

∆VOUT_Initl

TA = 25C, 2.4V ≤ VIN ≤ 5.5V

-2

+2

%

Line Regulation

∆VOUT_linel

2.4V

≤ VIN ≤ 5.5V

0.06

%/V

Load Regulation

∆VOUT_load

0A

≤ ILOAD ≤ 800mA

0.0003

%/mA

Temperature Variation

∆VOUT_templ

-40°C

≤ TA ≤ +85°C

0.008

%/°C

Overall VOUT Accuracy

(Line, Load, and

Temperature combined)

∆VOUT_All

2.4V

≤ VIN ≤ 5.5V

-40°C

≤ TA ≤ +85°C

0A

≤ ILOAD ≤ 800mA

-3

+3

%

Dynamic Voltage Slew

Rate

†

Vslew

1.125

1.5

1.875

V/mS

Continuous Output

Current

IOUT

-20°C

≤ TA ≤ +85°C

-40°C

≤ TA ≤ +85°C

800

750

mA

Shut-Down Current

ISD

Enable = Low

0.75

µA

PFET OCP Threshold

ILIM

1000

mA

Feedback Pin Voltage

VFB

2.4V

≤ VIN ≤ 5.5V

-20°C

≤ TA ≤ +85°C

0A

≤ ILOAD ≤ 800mA

0.585

0.603

0.621

V

Feedback Pin Input

Current

IFB

10

nA

VS2-VS0 Threshold

VSX_TH

Pin = Low

Pin = High

0.0

1.4

0.4

VIN

V

VS2-VS0 Pin Input

Current

IVSX

1

nA

Enable Pin Voltage

Thresholds

VEN_TH

Pin = Low

Pin = High

0.0

1.4

0.2

VIN

V

Enable Pin Input Current

IEN

ENABLE = Vin = 3.6V

2

µA

Operating Frequency

FOSC

4

MHz

PFET On Resistance

RDS(ON)

340

m

Ω

NFET On Resistance

RDS(ON)

270

m

Ω

Dropout Resistance

RDROPOUT

450

m

Ω

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