LTC3815_15 Datasheet, PDF (4/42 Pages) Linear Technology – 6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management

LTC3815
Electrical Characteristics The l denotes the specifications which apply over the specified operating
junction temperature range, V_IN = 3.3V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
V_MODE
t_ON(MIN)
t_OFF(MIN)
R_TOP
R_BOTTOM
θ_CLKOUT
PGOOD
Discontinuous Mode Threshold
Minimum On-Time
Minimum Off-Time
Top Power PMOS On Resistance
Bottom Power NMOS On Resistance
Relative Phase of CLKOUT
MODE/SYNC = 0V
1
V
75
ns
100
ns
35
mΩ
20
mΩ
180
Deg
V_{PGOOD,DEFAULT} Default PGOOD Threshold
V_{PGOOD,PROGRAM} Program PGOOD Threshold
I_LEAK
V_OL
t_PGFD
PGOOD Leakage Current
PGOOD Output Low Voltage
PGOOD Filter Delay
Output Voltage Readback
V_PGLIM = V_IN, V_OUT >1V
V_PGLIM/V_REF = 0.19, V_OUT ≥ 1V
V_PGLIM/V_REF = 0.38
I_OUT = 3mA
PGFD = 0V
PGFD = 0.65V
PGFD = V_IN
±8
±10
±12
%
±6
±10
±9
%
±13
±30
±17
%
±5
µA
0.1
0.3
V
150
190
250
µs
1.0
1.6
2.2
ms
17
24
32.5
ms
N
Resolution
LSB Step Size
13
Bits
0.5
mV
V_F/S
V_{OUT_TUE}
Full Scale Output Voltage
Total Unadjusted Error
(Note 9)
16.4
V
l
±0.75
%
±0.5
%
t_CONVERT
Conversion Time
Input Voltage Readback
40
ms
N
Resolution
LSB Step Size
13
Bits
4
mV
V_F/S
Full Scale Input Voltage
V_{IN_TUE}
Total Unadjusted Error
t_CONVERT
Conversion Time
Output Current Readback
(Note 9)
131
V
l
±1
%
40
ms
N
Resolution
LSB Step Size
13
Bits
10
mA
V_F/S
Full Scale Output Current
I_{OUT_TUE}
Total Unadjusted Error
t_CONVERT
Conversion Time
Input Current Readback
±82
A
±3
%
40
ms
N
Resolution
LSB Step Size
13
Bits
10
mA
V_F/S
I_{IN_TUE}
t_CONVERT
Full Scale Input Current
Total Unadjusted Error
Conversion Time
±82
A
±3
%
40
ms
3815p
4
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