XR79110

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exar.com/XR79110

Rev 2B

© 2015-2017 Exar Corporation

Absolute Maximum Ratings

Stresses beyond the limits listed below may cause perma-

nent damage to the device. Exposure to any Absolute Max-

imum Rating condition for extended periods may affect

device reliability and lifetime.

BST-SW.......................................................................-0.3V to 6V

ALL other pins.................................................-0.3V to VCC+0.3V

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

Junction Temperature..........................................................150°C

Power Dissipation...............................................Internally Limited

Lead Temperature (Soldering, 10 sec)......................260°C MSL3

ESD Rating (HBM - Human Body Model)...............................2kV

ESD Rating (CDM - Charged Device Model)..........................2kV

Operating Conditions

Junction Temperature Range..............................-40°C to +125°C

JEDEC51 Package Thermal Resistance,



Package Power Dissipation at 25°C.......................................5.5W

Note 1: No external voltage applied.

Note 2: SW pin’s minimum DC range is -1V, transient is -5V for less than

50ns, -7V for less than 20ns, -9V for less than 10ns.

Note 3: Recommended frequency for optimum performance

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Power Supply Characteristics

Input Voltage Range

VCC regulating or in dropout



4.5

22

V

VCC tied to VIN



4.5

5.5

VIN Input Supply Current



0.7

2

mA

VCC Quiescent Current



0.7

2

mA

VIN Input Supply Current

11

mA

Shutdown Current

1

μA

Enable and Under-Voltage Lock-Out UVLO

EN Pin Rising Threshold



1.8

1.9

2.0

V

EN Pin Hysteresis

50

mV

EN Pin Rising Threshold for DCM/

CCM operation



2.8

3.0

3.1

V

EN Pin Hysteresis

100

mV