SC183C datasheet(3/20 Pages) SEMTECH

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SC183C

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Electrical Characteristics

Exceeding the absolute maximum ratings may result in permanent damage to the device and/or device malfunction. Operation outside of the

parameters specified in the Electrical Characteristics section is not recommended.

NOTES:

(1) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.

(2) Tested according to JEDEC standard JESD22-A114-B.

Recommended Operating Conditions

Supply Voltage PVIN and AVIN …………………… 2.9 to 5.5V

Maximum Output Current

………………………………… 2.0A

Temperature Range …………………………… -40 to +85˚C

Input Capacitor ………………………………………… 10uF

Output Capacitor ……………………………………… 22uF

Output Inductor ……………………………………… 2.2uH

Thermal Resistance, Junction to Ambient(1) ………… 40 °C/W

Maximum Junction Temperature …………………… +150°C

Storage Temperature Range ………………… -65 to +150 °C

Thermal Information

PVIN and AVIN Supply Voltages ………………… -0.3 to 6.0V

LX Voltage ………….. -1 to PVIN+1V, -3V (20ns Max), 6V Max

VOUT Voltage …………………………… -0.3 to AVIN+0.3V

CTLx Voltage …………………………… -0.3 to AVIN+0.3V

Peak IR Reflow Temperature …………………………. 260°C

ESD Protection Level(2) …………………………………. 2.5kV

Unless specified: PVIN= AVIN= 5.0V, VOUT= 1.50V, C

IN= 10µF, COUT= 22µF, L= 2.2µH, -40°C≤ TJ≤ +125 °C. Unless otherwise noted typical values are

A= +25 °C.

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Under-Voltage Lockout

UVLO

Rising AVIN, PVIN=AVIN

2.70

2.80

2.90

Hysteresis

240

300

Output Voltage Tolerance(1)

ΔV

OUT

PVIN= AVIN= 2.9 to 5.5V; I

OUT=0A

-2.0

+2.0

Current Limit

LIMIT

Peak LX current

2.5

3.0

3.75

Supply Current

No load

Shutdown Current

SHDN

CTL

0-3= AGND

µA

High Side Switch Resistance

DSON_P

LX= 100mA, TJ= 25 °C

0.10

0.125

LX= 100mA, TJ= 125 °C

0.14

0.18

Low Side Switch Resistance(2)

DSON_N

LX= -100mA, TJ= 25 °C

0.09

0.115

LX= -100mA, TJ= 125 °C

0.125

0.160

X Leakage Current

(2)

LK(LX)

PVIN= AVIN= 5.5V; LX= 0V; CTL

0-3= AGND

µA

PVIN= AVIN= 5.5V; LX= 5.0V; CTL

0-3= AGND

-10

-1

Load Regulation

ΔV

LOAD-REG

PVIN= AVIN= 5.0V; I

OUT=1mA to 2A

±0.5

±1.0

Oscillator Frequency

OSC

2.125

2.500

2.875

MHz

Soft-Start Time(2)

OUT= 0 to 2A

850

980

µs

CTLx Input High Current(2)

EN_HI

CTL

0-3=AVIN

-2.0

2.0

µA

CTLx Input Low Current(2)

EN_LO

CTL

0-3=AGND

-2.0

2.0

µA

Absolute Maximum Ratings

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