XR77103 Datasheet, PDF (3/28 Pages) Exar Corporation – 3-Output Programmable Buck Regulator

XR77103
Absolute Maximum Ratings
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. Stresses beyond those listed under
absolute maximum ratings may cause permanent damage
to the device. Exposure to any absolute maximum rating
condition for extended periods may affect device reliability
and lifetime.
V_IN1, V_IN2, V_IN3, LX1, LX2, LX3........................ -0.3V to 18V
VL, EN, SCL, SDA, nWR, A0, V_CC..................... -0.3V to 7V
PGOOD, SYNC.................................................. -0.3V to 7V
BST# to LX#....................................................... -0.3V to 7V
AGND, DGND to GND..................................... -0.3V to 0.3V
Storage temperature..................................... -65°C to 150°C
Junction temperature.................................................. 150°C
Power dissipation...................................... Internally Limited
Lead temperature (soldering, 10 seconds)................. 260°C
CDM............................................................................. 700V
ESD rating (HBM – human body model)........................ 2kV
Operating Conditions
V_IN......................................................................4.5V to 14V
V_CC....................................................................4.5V to 5.5V
LX#.................................................................-0.3V to 14V⁽¹⁾
Junction temperature range (T_J).................. -40°C to 125°C
XR77103 package power dissipation max at 25°C...... 3.4W
XR77103 thermal resistance θ_JA.............................. 30°C/W
NOTE:
1. LX# pins’ DC range is from -0.3V, transient -1V for less than 10ns.
Electrical Characteristics
T_A = 25°C, V_IN = 12V, EN = V_CC, f_SW = 1MHz, unless otherwise specified. Limits applying over the full operating temperature
range are denoted by a •.
Symbol
Parameter
Power Supply Characteristics
V_IN
Input voltage range
V_IN
Input voltage range
V_UVLO
UVLO threshold
UVLO_DEGLITCH
I_VIN
UVLO deglitch
I_VINQ
V_IN supply current
I_{VINQ_LP}
Internal Supply Voltage
V_CC
Internal biasing supply
I_VCC
Internal biasing supply current
V_UVLO
UVLO threshold for V_CC
UVLO_DEGLITCH UVLO deglitch for V_CC
Conditions
VCC tied to VIN for V_IN = 5V
UV = 0, V_IN rising/falling
UV = 1, V_IN rising/falling
Rising/falling
EN = GND
EN = high, no load, CCM
EN = high, no load, PSM
I_LOAD = 0mA
V_IN = 12V
V_CC rising
V_CC falling
Falling edge
• Min
Typ
Max
Units
•
5.5
14
V
•
4.5
5.5
V
4.22/4.1
V
7/6.88
110
µs
250
µA
36
mA
2.6
mA
•
4.9
5
5.1
V
•
10
mA
3.8
V
3.6
V
110
µs
REV1B
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