SC2643VX
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the
Electrical Characteristics section is not implied. Unless otherwise specified, all other voltages are referenced to AGND.
Parameter
V
CC
Supply Voltage
Combi-Sense/Direct Output Voltage
VID Pins Except VID5
VID5
Oscillator Frequency Setting and OUT Pins
Ground Sense
All Other Pins
Thermal Resistance of Junction to Case
Ambient Temperature Range
Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 Sec.
Symbol
V
CC
OS1, OS2, OS3, OS4, OUTSEN
VID0 ~ VID4
VID5
OUT1, OUT2, OUT3, OSCREF
GSENSE
OUT4, FB, DACSTEP
θ
JC
T
A
T
J
T
STG
T
LEAD
o
Maximum
-0.3 to 20
5
7
-0.3 to V
CC
+0.3
7
-0.3 to +0.3
-0.3 to V
CC
+0.3
15.6
0 to 105
0 to 125
-65 to 150
260
Units
V
V
V
V
V
V
V
o
C/W
o
o
o
o
C
C
C
C
Electrical Characteristics
Unless specified: V
CC
= 12V, VID=1.30V (110110,VRD10) or 1.50V (101110,VRD10), F
OSC
= 600kHz, T
A
= 27 C. See Typical Application Circuit.
Parameter
Chip_Supply
IC Supply Voltage
IC Supply Current
UVLO Ramp Up
UVLO Ramp Down
Reference Section
Bandgap Output
Source Current
Supply Rejection
Temperature Stability
VID Step
VID Step
Symbol
Test Conditions
Min
Typ
Max
Units
V
CC
I
CC
UVLO
UVLO
Vcc Rising
Vcc Falling
7.5
12
10
7.3
14
13
7.5
V
mA
V
V
6.4
6.5
V
BGOUT
C
BGOUT
= 4.7nF
2.945
220
2.990
300
0.5
0.5
25
12.5
3.035
330
V
µA
mV/V
%
mV
mV
V
CC
= 10.0V ~ 14.0V
0
o
C < T
A
< 85
o
C
VRM9.X, K-8, LSB
VRD/VRM10, LSB
VRD10 ; Internal offset=-20mV
-0.5
-1
-1
+0.5
+1
+1
%
%
%
Voltage Accuracy
V
OUT
VRM9.x ; Internal offset=-20mV
K-8 ; Internal offset=+25mV
2005 Semtech Corp.
3
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SEMTECH [ SEMTECH CORPORATION ]
