LTC3601_15 Datasheet, PDF (3/26 Pages) Linear Technology – 1.5A, 15V Monolithic Synchronous Step-Down Regulator

LTC3601
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 2). V_VIN = 12V, unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
V_VIN
Input Supply Range
I_Q
Input DC Supply Current
Forced Continuous Operation
MODE = 0V
Sleep Current
Shutdown
MODE = INTV_CC, V_FB > 0.6V
RUN = 0V
l
4
15
V
700
1000
μA
300
500
μA
14
25
μA
V_FB
∆V_LINEREG
∆V_LOADREG
I_FB
g_m(EA)
t_ON(MIN)
t_OFF(MIN)
I_LIM
f_OSC
Feedback Reference Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
Feedback Pin Input Current
Error Amplifier Transconductance
Minimum On-Time
Minimum Off-Time
Valley Switch Current Limit
Oscillator Frequency
R_DS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
V_VIN = 4V to 15V
ITH = 0.6V to 1.6V
V_FB = 0.6V
ITH = 1.2V
V_ON = 1V, V_IN = 4V
V_IN = 6V
V_RT = INTV_CC
R_RT = 160k
R_RT = 80k
l 0.594
0.600
0.606
V
0.01
%/V
0.1
%
±30
nA
2.0
mS
20
ns
40
60
ns
1.7
2.2
2.8
A
1.4
2
2.6
MHz
1.7
2
2.3
MHz
3.4
4
4.6
MHz
130
mΩ
100
mΩ
V_VIN-OV
V_INTVCC
∆INTV_CC
V_UVLO
V_RUN
V_IN Overvoltage Lockout Threshold
INTV_CC Voltage
INTV_CC Load Regulation (Note 4)
INTV_CC Undervoltage Lockout
Threshold
RUN Threshold
V_IN Rising
V_IN Falling
4V < V_IN < 15V
I_INTVCC = 0mA to 20mA
INTV_CC Rising, V_IN = INTV_CC
INTV_CC Falling, V_IN = INTV_CC
RUN Rising
RUN Falling
l 16.8
17.5
18
V
l
15.8
16.5
17
V
3.15
3.3
3.45
V
0.6
%
2.75
2.9
V
2.45
V
l
1.21
1.25
1.29
V
l 0.97
1.0
1.03
V
I_RUN(LKG)
V_{FB_GB}
RUN Leakage Current
PGOOD Good-to-Bad Threshold
V_VIN = 15V
FB Rising
FB Falling
0
±3
μA
8
10
%
–8
–10
%
V_{FB_BG}
PGOOD Bad-to-Good Threshold
FB Rising
FB Falling
–3
–5
%
3
5
%
t_PGOOD
R_PGOOD
I_SW(LKG)
t_SS
V_{FB_TRACK}
I_TRACK
V_MODE/
SYNC
I_MODE
Power Good Filter Time
PGOOD Pull-Down Resistance
Switch Leakage Current
Internal Soft-Start Time
TRACK Pin
TRACK Pull-Up Current
MODE Threshold Voltage
SYNC Threshold Voltage
MODE Input Current
10mA Load
V_RUN = 0V
V_FB from 10% to 90% Full Scale
TRACK = 0.3V
MODE V_IH
MODE V_IL
SYNC V_IH
MODE = 0V
MODE = INTV_CC
20
40
μs
15
Ω
0.01
1
μA
400
700
μs
0.28
0.3
0.315
V
1.4
μA
l
1.0
l
V
0.4
V
l 0.95
V
–1.5
μA
1.5
μA
3601fb
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