LTC3810-5 Datasheet, PDF (3/36 Pages) Linear Technology – 60V Current Mode Synchronous Switching Regulator Controller

LTC3810-5
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_ON = V_RNG = SHDN = UV_IN = V_EXTVCC = V_NDRV
= 5V, V_MODE/SYNC = V_SENSE⁺ = V_SENSE^– = V_BGRTN = V_SW = 0V, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loop
INTV_CC
I_Q
I_BOOST
INTV_CC Supply Voltage
INTV_CC Supply Current
INTV_CC Shutdown Current
BOOST Supply Current
SHDN > 1.5V (Notes 4, 5)
SHDN = 0V
SHDN > 1.5V (Note 5)
SHDN = 0V
l 4.35
14
V
3
6
mA
240
600
μA
270
400
μA
0
5
μA
V_FB
Feedback Voltage
(Note 4)
0°C to 85°C
–40°C to 85°C
–40°C to 125°C (I-Grade)
0.796 0.800 0.804
V
l 0.794 0.800 0.806
V
l 0.792 0.800 0.806
V
l 0.792 0.800 0.808
V
ΔV_FB,LINE
V_SENSE(MAX)
V_SENSE(MIN)
I_VFB
A_VOL(EA)
f_U
Feedback Voltage Line Regulation
Maximum Current Sense Threshold
Minimum Current Sense Threshold
Feedback Current
Error Amplifier DC Open Loop Gain
Error Amp Unity-Gain Crossover
Frequency
5V < 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)
l
0.002 0.02
%/V
256
320
384
mV
70
95
120
mV
170
215
260
mV
–300
mV
–85
mV
–200
mV
20
150
nA
65
100
dB
25
MHz
V_MODE/SYNC
I_MODE/SYNC
V_SHDN
I_SHDN
V_UVIN
MODE/SYNC Threshold
MODE/SYNC Current
Shutdown Threshold
SHDN Pin Input Current
UVIN Undervoltage Lockout
V_MODE/SYNC Rising
MODE/SYNC = 5V
UVIN Rising
UVIN Falling
Hysteresis
0.75
0.8
0.85
V
0
1
μA
1.2
1.5
2
V
0
1
μA
l 0.86 0.89 0.92
V
l 0.78 0.80 0.82
V
0.07 0.10 0.12
V
V_VCCUV
INTV_CC Undervoltage Lockout
Linear Regulator Mode
External Supply Mode
Trickle-Charge Mode
Oscillator and Phase-Locked Loop
INTV_CC Rising, I_NDRV = 100μA
l 4.05
4.2
4.35
V
INTV_CC Rising, NDRV = INTV_CC = EXTV_CC l 4.05
4.2
4.35
V
INTV_CC Rising, NDRV = INTV_CC, EXTV_CC = 0 l 8.70
9
9.30
V
INTV_CC Falling
3.7
V
t_ON
t_ON(MIN)
t_OFF(MIN)
t_ON(PLL)
I_PLL/LPF
Driver
On-Time
Minimum On-Time
Minimum Off-Time
t_ON Modulation Range by PLL
Down Modulation
Up Modulation
Phase Detector Output Current
Sinking Capability
Sourcing Capability
I_ON = 100μA
I_ON = 300μA
I_ON = 2000μA
I_ON = 100μA, V_PLL/LPF = 0.6V
I_ON = 100μA, V_PLL/LPF = 1.8V
f_PLLIN < f_SW
f_PLLIN > f_SW
1.55 1.85 2.15
μs
515
605
695
ns
100
ns
250
350
ns
2.2
3.6
5
μs
0.6
1.2
1.8
μs
15
μA
–25
μA
I_BG,PEAK
R_BG,SINK
I_TG,PEAK
R_TG,SINK
BG Driver Peak Source Current
BG Driver Pull-Down R_DS(ON)
TG Driver Peak Source Current
TG Driver Pull-Down R_DS(ON)
V_BG = 0V
V_TG – V_SW = 0
0.7
1
A
1
1.5
Ω
0.7
1
A
1
1.5
Ω
38105fc
3