SC2643VX Datasheet, PDF (5/11 Pages) Semtech Corporation – Multi-Platform Multi-Phase PWM Controller

SC2643VX
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: V_CC = 12V, VID=1.30V (110110,VRD10) or 1.50V (101110,VRD10), F_OSC = 600kHz, T_A = 27^oC. See Typical Application Circuit.
Parameter
Symbol
Test Conditions
Min Typ Max
Units
Oscillator Section
Oscillator Frequency
Oscillator Frequency Range
Temperature Stability
3-Phase Operation
F_OSC
F_OSC
R_OSC = 309K
0^oC < T_A < 85^oC
540 600 660 kHz
330
2800 kHz
±5
%
Output 4 pull up Threshold
For 3-phase operation
3.5
4
4.5
V
Droop Amplifier
Gain
G_DA
Gain Accuracy⁽¹⁾
5.4
V/V
±5
%
Current Limit Section
Shutdown Voltage
VID - Shut Down Threshold
550 650 750 mV
Dynamic VID Section
Sinking Current of DACSTEP
I_{DAC_SINK}
Sourcing Current of DACSTEP
I_{DAC_SRC}
NOTES: 1) Guaranteed by design, not tested in production.
Specifications subject to change without notice.
390
uA
340
uA
 2005 Semtech Corp.
5
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