SC2441A(2006) Просмотр технического описания (PDF) - Semtech Corporation
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производитель
SC2441A
(Rev.:2006)
(Rev.:2006)
Semtech Corporation
SC2441A Datasheet PDF : 37 Pages
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SC2441A
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: VIN = 2V, VCC = VBST1 = VBST2 =8V, SYNC/SHDN =2V, ROSC = 51.1kΩ, -40°C < TA = TJ < 105°C
Parameter
Symbol
Conditions
COMP Threshold for PWM Operation
FB2 Voltage For 2-Phase Single Output
Mode of Operation
Oscillator and Phase-Locked Loop
VCS1(+) = VCS1(-) = 0
VCS2(+) = VCS2(-) = 0
Free Running Frequency
fCCO
Minimum Locking Frequency
Free Running Frequency / Minimum Locking
Frequency
Charge Pump Output Current
Maximum Duty Cycle
Minimum Duty Cycle
SYNC/SHDN Input High Voltage
SYNC/SHDN Input Low Voltage
IPLLF
DMAX1,
DMAX2
D D MIN1, MIN2
VS/SH
VS/SL
SYNC/SHDN Input Current
IS/S
Shutdown Delay
TJ = 25°C; VPLLF > 1V
VPLLF open
TJ = 25°C
VPLLF=1V
VS/S = 0.2V
VS/S = 2V
(Note 1)
Clock Output High Voltage
CKOUTH
ICKOUT = -80µA
Clock Output Low Voltage
CKOUTL
ICKOUT = 200µA
Current-Sense Amplifiers, PWM and Current-Limit Comparators
Input Common Mode Range
Current Limit Threshold
V V ILIM1, ILIM2
Current Limit Threshold
V V ILIM1, ILIM2
Positive Current-Sense Input Bias Current I I CS1(+), CS2(+)
Negative Current-Sense Input Bias Current
Minimum PWM On-time
Gate Drivers
I I CS1(-), CS2(-)
High-Side Gate Drive Peak Source Current
High-Side Gate Drive Peak Sink Current
Low-Side Gate Drive Peak Source Current
VCC = 8V
VCS1(-) = VCS2(-) = 0V
VCC = 8V
VCS1(-) = VCS2(-) = 5V
VCS1(+) = VCS1(-) = 0
VCS2(-) = VCS2(-) = 0
VCS1(+) = VCS1(-) = 0
VCS2(+) = VCS2(-) = 0
TA = 25°C, (Note 1)
(Note 1)
(Note 1)
(Note 1)
Min
1.67
1.55
450
1.7
10
88
1.5
1.6
0
18
18
Typ Max Units
1.85 2.05
V
V
500 550 KHz
240
KHz
2.0
15
20
µA
90
%
0
%
V
0.5
V
40
1
60
µA
85
µs
1.8
V
0.4
V
VCC - 1 V
23
28
mV
23
28
mV
-0.4 -0.8 µA
-40 -75
µA
180
ns
2
A
2
A
2
A
2006 Semtech Corp.
3
www.semtech.com
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