SC4611 データシートの表示（PDF） - Semtech Corporation
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SC4611 Datasheet PDF : 11 Pages
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SC4611
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: TA = TJ = -40 to +85°C, Vin = 12V, PVCC = AVCC = 6V, Fsw = 625 kHz, SS/SH = 5V
Parameter
Oscillator
Frequency Range
Frequency
Peak to Peak Ramp Voltage(1)
SYNC Input High Pulse Width
SYNC Rise/Fall Time
SYNC Frequency Range
SYNC High/Low Threshold
Error Amplifier
Feedback Voltage
Input Bias Current (1)
Symbol
Test Conditions
Fsw
Fsw
VRAMP
TSYNC
RT = 15K
VSYNC
VFB
TA = 25 Deg C
Unity Gain Bandwidth (1)
Open Loop DC Gain (1)
Output Source/Sink Current
IEAO
Current Sense Comparator
CS- pin offset current (ILIM ADJ)
ICS-
Current limit sense threshold
VCL
Current limit hysteresis
Power Good and Overvoltage Protection
FB Level for Output High Sense
Hysteresis (1)
VLTH
FB Level for Output Low Sense
Hysteresis (1)
VHTH
PWR OK Output Low Level
OVP Trip Reference
VPOK
VOVP
RT = 15K
Rclset = 1K
IPOK = 0
(1) Guaranteed by design. Not tested in production.
Min
150
550
100
Fsw
0.493
66
66
0.52
0.42
0.475
2004 Semtech Corp.
3
Typ
625
3.0
2.0
0.5
0.2
3
90
+ 10
82
82
30
0.55
6
0.45
6
0.2
0.5
Max
Unit
1000
kHz
700
kHz
V
nS
50
nS
Fsw +15% kHz
V
0.507
V
µA
MHz
dB
mA
98
µA
98
mV
%
0.58
V
mV
0.48
V
mV
V
0.525
V
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