SC4525C

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-

() Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD5 standards.

(2) Tested according to JEDEC standard JESD22-A4-B.

Electrical Characteristics

Unless otherwise noted, V

IN = 2V, VBST = 5V, VSS = 2.2V, -40°C < TA = TJ < 25°C, ROSC = 2.kΩ.

Absolute Maximum Ratings

V

IN Supply Voltage ……………………………… -0.3 to 32V

BST Voltage ……………………………………………… 42V

BST Voltage above SW …………………………………… 34V

SS Voltage ……………………………………………-0.3 to 3V

FB Voltage …………………………………………… -0.3 to V

IN

SW Voltage ………………………………………… -0.6 to V

IN

SW Transient Spikes (0ns Duration)……… -2.5V to V

IN +.5V

Peak IR Reflow Temperature ………………………….

260°C

ESD Protection Level(2) ………………………………… 2000V

Thermal Information

Junction to Ambient () ……………………………… 36°C/W

Junction to Case () ………………………………… 5.5°C/W

Maximum Junction Temperature……………………… 50°C

Storage Temperature ………………………… -65 to +50°C

Lead Temperature (Soldering) 0 sec ………………… 300°C

Parameter

Conditions

Min

Typ

Max

Units

Input Supply

Input Voltage Range

3

28

V

V

IN Start Voltage

V

IN Rising

2.70

2.82

2.95

V

V

IN Start Hysteresis

225

mV

V

IN Quiescent Current

V

COMP = 0 (Not Switching)

2

2.6

mA

V

IN Quiescent Current in Shutdown

V

SS/EN = 0, VIN = 2V

40

52

µA

Error Amplifier

Feedback Voltage

0.980

.000

.020

V

Feedback Voltage Line Regulation

V

IN = 3V to 28V

0.005

%/V

FB Pin Input Bias Current

V

FB = V, VCOMP = 0.8V

-70

-340

nA

Error Amplifier Transconductance

300

µΩ-

Error Amplifier Open-loop Gain

60

dB

COMP Pin to Switch Current Gain

5.2

A/V

COMP Maximum Voltage

V

FB = 0.9V

2.35

V

COMP Source Current

V

FB = 0.8V, VCOMP = 0.8V

7

µA

COMP Sink Current

V

FB = .2V, VCOMP = 0.8V

25

Internal Power Switch

Switch Current Limit

(Note )

3.9

5.

6.6

A

Switch Saturation Voltage

I

SW = -3.9A

380

600

mV

Recommended Operating Conditions

Input Voltage Range ……………………………… 3V to 28V

Maximum Output Current ……………………………… 3A

Operating Ambient Temperature …………… -40 to +05°C

Operating Junction Temperature …………… -40 to +25°C