SC198A

3

Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters

specified in the Electrical Characteristics section is not recommended.

NOTES:

(1)

Tested according to JEDEC standard JESD22-A114-B.

(2)

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

Unless otherwise noted: V

IN

= 3.6V, V

MODE/SYNC

= V

IN

, L = 4.7μH, C = 10μF, T

A

= -40°C to +85°C. Typical values are at T

A

= 25°C for both outputs.

Electrical Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Input Voltage Range

V

IN

V

OUT

= 1.8V

2.7

5.5

V

V

OUT

= 3.3V

4.0

5.5

V

OUT

ΔV

OUT

I

OUT

= 10mA to 800mA , V

0.7V + V

OUT

-3

3

%

Line Regulation

ΔV

LINE

V

IN

= 2.7 to 5.5V, V

OUT

= 1.8V, I

OUT

= 300mA

0.2

%/V

V

IN

= 4.0 to 5.5V, V

OUT

= 3.3V, I

OUT

= 300mA

Load Regulation

ΔV

LOAD

I

OUT

= 10mA to 800mA, V

OUT

= 1.8V

0.0008

%/mA

I

OUT

= 10mA to 800mA, V

OUT

= 3.3V, V

IN

= 5.0V

Minimum Duty Cycle

DC

MIN

18

%

LXA, LXB Current Limit

I

LIM

1.2

A

Quiescent Current

I

Q

I

OUT

= 0mA, SYNC = 0, ENA, ENB = V

IN

50

μA

Shutdown Current

I

SD

V

ENA

, V

ENB

= 0, LXA, LXB = Open

0.1

1

μA

LXA and LXB

Leakage Current

I

LXA

, I

LXB

V

IN

= 5.5V, V

LX

= 0V, PMOS

0.1

1

μA

V

IN

= 5.5V, V

LX

= V

IN

, NMOS

-2

0.1

μA

P-Channel On Resistance

R

DSP

I

LXA

, I

LXB

= 100mA

0.35

Ω

Absolute Maximum Ratings

V

IN

(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +7

V

OUT

(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to V

IN

+0.3

V

LXA

and V

LXB

(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-1 to V

IN

+1

Pin Voltage - All Other Pins (V) . . . . . . . . . -0.3 to (V

IN

+ 0.3)

Output Short Circuit to GND Duration . . . . . Continuous

LXA and LXB Currents (A). . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2

Recommended Operating Conditions

Ambient Temperature Range (°C) . . . . . . . . . . . . . -40 to +85

V

IN

(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 to 5.5

Thermal Information

Maximum Junction Temperature (°C) . . . . . . . . . . . . . . +150

Storage Temperature Range (°C) . . . . . . . . . . . . -65 to +150

Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . +260