SP6655ER/TR データシートの表示（PDF） - Signal Processing Technologies

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SP6655ER/TR

High Efficiency 400mA Synchronous Buck Regulator

Signal Processing Technologies 

ABSOLUTE MAXIMUM RATINGS

PVIN,VIN .............................................................................................. 6V

All other pins .............................................................. -0.3V to V +0.3V

IN

PVIN, PGND, LX current ........................................................................ 2A

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

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

These are stress ratings only and functional operation of the device at

these ratings or any other above those indicated in the operation sections

of the specifications below is not implied. Exposure to absolute maximum

rating conditions for extended periods of time may affect reliability.

ELECTRICAL CHARACTERISTICS

VIN=UVIN=VSDN=3.6V, VOUT=VFB, IO = 0mA, TAMB = -40°C to +85°C, typical values at 27°C unless otherwise noted.

PARAMETER

Input Voltage Operating

Range

Minimum Output Voltage

FB Set Voltage, Vr

MIN

UVLO

1.0

0.784

Overall Accuracy

(-40°C to 85°C)

(0°C to 70°C)

On-Time Constant - KON

1.5

Min, TON=KON/(VIN-VOUT)

Off-Time Constant - KOFF

1.6

Min, TOFF=KOFF/VOUT

Off-Time Blanking

Turn On Time

PMOS Switch Resistance

NMOS Switch Resistance

Inductor Current Limit

500

Power Efficiency

Minimum Guaranteed Load

400

Current

VIN Quiescent Current

VIN Shutdown Current

VOUT Quiescent Current

VOUT Shutdown Current

UVLO

2.55

Undervoltage Lockout

2.70

Threshold, VIN falling

2.85

UVLO hysteresis

Battlo Trip Voltage, VIN falling 265

Battlo Trip Voltage Hysteresis

BLON Low Output Voltage

BLON Leakage Current

Over-Temperature

Rising Trip Point

Over-Temperature Hysteresis

D1,D0 Leakage Current

D1,D0 Input Threshold Voltage 0.60

FB Leakage Current

LX Leakage

TYP

0.800

2.25

2.4

100

200

0.3

0.3

625

96

92

500

20

1

2

1

2.70

2.85

3.00

40

300

9

140

14

1

0.90

1.25

1

3

MAX UNITS CONDITIONS

5.5

V Result of IQ measurement at VIN=PVIN=5.5V

0.816

±5

±4

3.0

V

V

%

V*µs

25°C, IO=200mA Close Loop. LI = 10µH,

COUT = 22µF

Measured at VIN=5.5V, no load and

VIN=3.6V, 200mA load, Close Loop

Close Loop, LI = 10µH,COUT = 22µF

3.2 V*µs Inductor current limit tripped, VFB=0.5V

Measured at VOUT=1V

ns

400

µs 400mA Load

0.6

Ω

IPMOS = 200mA

0.6

Ω

INMOS = 200mA

750 mA VFB=0.5V

% VOUT=2.5V, IO=200mA

VOUT=3.3V, IO=400mA

mA

30

500

5

500

2.85

3.00

3.15

335

0.4

1

µA VOUT=3.3V, VIN=3.6V and VIN= 5.5V

nA D1=D0=0V

µA VOUT = 3.3V

nA D1=D0=0V

D1=0V, D0=VIN

V D1=VIN, D0=0V

D1=VIN, D0=VIN

mV

mV Measured as VIN-VOUT

mV

V

VIN=3.3V, ISINK=1mA

µA VBLON=3.6V

°C

°C

500

nA

V High to Low Transition

1.8

V Low to High Transition

100

nA FB=1V

5

µA D1,D0=0V, VIN=3.6V

LX=0V,LX=VIN+0.2V

Date: 09/27/05

SP6655 High Efficiency 400mA Synchronous Buck Regulator

2

© Copyright 2004 Sipex Corporation

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