LTC3813 Datasheet, PDF (3/32 Pages) Linear Technology – 100V Current Mode Synchronous Step-Up Controller

LTC3813
ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C, INTV_CC = DRV_CC = V_BOOST = V_OFF = V_RNG = SHDN = UV_IN = V_EXTVCC =
V_NDRV = 10V, V_SYNC = V_SENSE⁺ = V_SENSE^– = V_BGRTN = V_SW = 0V, unless otherwise specified.
SYMBOL
V_FB
PARAMETER
Feedback Voltage
ΔV_FB,LINE
V_SENSE(MAX)
Feedback Voltage Line Regulation
Maximum Current Sense Threshold
V_SENSE(MIN)
Minimum Current Sense Threshold
I_VFB
A_VOL(EA)
f_U
I_SYNC
V_SHDN
I_SHDN
I_SS
V_VINUV
Feedback Current
Error Amplifier DC Open Loop Gain
Error Amp Unity Gain Crossover Frequency
SYNC Current
Shutdown Threshold
SHDN Pin Input Current
SS Source Current
V_IN Undervoltage Lockout
V_VCCUV
INTV_CC Undervoltage Lockout
Oscillator and Phase-Locked Loop
t_OFF
Off-Time
t_OFF(MIN)
t_ON(MIN)
t_OFF(PLL)
I_PLL/LPF
Driver
I_BG,PEAK
R_BG,SINK
I_TG,PEAK
R_TG,SINK
PGOOD Output
ΔV_FBOV
ΔV_FB,HYST
V_PGOOD
Minimum Off-Time
Minimum On-Time
t_OFF Modulation Range by PLL
Down Modulation
Up Modulation
Phase Detector Output Current
Sinking Capability
Sourcing Capability
BG Driver Peak Source Current
BG Driver Pulldown R_DS(ON)
TG Driver Peak Source Current
TG Driver Pulldown R_DS(ON)
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
CONDITIONS
(Note 4)
0°C to 85°C
–40°C to 85°C
–40°C to 125°C (I-Grade)
7V < INTV_CC < 14V (Note 4)
V_RNG = 2V, V_FB = 0.76V
V_RNG = 0V, V_FB = 0.76V
V_RNG = INTV_CC, V_FB = 0.76V
V_RNG = 2V, V_FB = 0.84V
V_RNG = 0V, V_FB = 0.84V
V_RNG = INTV_CC, V_FB = 0.84V
V_FB = 0.8V
(Note 6)
SYNC = 10V
V_SS > 0.5V
V_IN Rising
V_IN Falling
Hysteresis
INTV_CC Rising
Hysteresis
I_OFF = 100μA
I_OFF = 300μA
I_OFF = 2000μA
I_OFF = 100μA, V_PLL/LPF = 0.6V
I_OFF = 100μA, V_PLL/LPF = 1.8V
f_PLLIN < f_SW
f_PLLIN > f_SW
V_BG = 0V
V_TG – V_SW = 0V
V_FB Rising
V_FB Falling
V_FB Returning
I_PGOOD = 5mA
MIN
0.796
l 0.794
l 0.792
l 0.792
l
256
70
170
65
1.2
0.7
l 0.86
l 0.78
0.07
l 6.05
TYP
0.800
0.800
0.800
0.800
0.002
320
95
215
–300
–85
–200
20
100
25
0
1.5
0
1.4
0.88
0.80
0.10
6.2
0.5
MAX
0.804
0.806
0.806
0.808
0.02
384
120
260
150
1
2
1
2.5
0.92
0.82
0.12
6.35
UNITS
V
V
V
V
%/V
mV
mV
mV
mV
mV
mV
nA
dB
MHz
μA
V
μA
μA
V
V
V
V
V
1.55 1.85 2.15
μs
515 605 695
ns
100
ns
350
ns
2.2
3.6
5
μs
0.6
1.2
1.8
μs
15
μA
–25
μA
1.5
2
A
1
1.5
Ω
1.5
2
A
1
1.5
Ω
7.5
10
12.5
%
–7.5 –10 –12.5
%
1.5
3
%
0.3
0.6
V
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