LT3791EFE-1 Datasheet, PDF (3/26 Pages) Linear Technology – 60V 4-Switch Synchronous Buck-Boost Controller

LT3791-1
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_IN = 12V, V_EN/UVLO = 12V unless otherwise noted.
PARAMETER
Logic Inputs
CONDITIONS
MIN
TYP
MAX
UNITS
EN/UVLO Falling Threshold
EN/UVLO Rising Hysteresis
l 1.16
1.2
1.24
V
15
mV
EN/UVLO Input Low Voltage
EN/UVLO Pin Bias Current Low
EN/UVLO Pin Bias Current High
CCM Threshold Voltage
I_VIN Drops Below 1µA
V_EN/UVLO = 1V
V_EN/UVLO = 1.6V
0.3
V
2
3
4
µA
10
100
nA
0.3
1.5
V
CTRL Input Bias Current
CTRL Latch-Off Threshold
V_CTRL = 1V
20
50
nA
175
mV
OVLO Rising Shutdown Voltage
OVLO Falling Hysteresis
l 2.85
3
3.15
V
75
mV
Regulation
V_REF Voltage
V_REF Line Regulation
V_(ISP-ISN) Threshold
4.7V < V_IN < 60V
V_CTRL = 2V
V_CTRL = 1100mV
l 1.96 2.00
2.04
V
0.002 0.04
%/V
97.5 100 102.5
mV
l 94
100
106
mV
87
90
93
mV
l 84
90
96
mV
ISP Bias Current
V_CTRL = 700mV
V_CTRL = 300mV
47.5
50
52.5
mV
l 46
50
54
mV
6.5
10
13.5
mV
l
5
10
15
mV
110
µA
ISN Bias Current
Output Current Sense Common Mode Range
20
µA
0
60
V
Output Current Sense Amplifier g_m
ISMON Monitor Voltage
Input Current Sense Threshold V_{(IVINP-IVINN)}
IVINP Bias Current
IVINN Bias Current
Input Current Sense Common Mode Range
Input Current Sense Amplifier g_m
IVINMON Monitor Voltage
FB Regulation Voltage
FB Line Regulation
FB Amplifier g_m
FB Pin Input Bias Current
V_(ISP-ISN) = 100mV
3V ≤ V_IVINP ≤ 60V
V_{(IVINP-IVINN)} = 50mV
4.7V < V_IN < 60V
FB in Regulation
890
µS
l 0.96
1
1.04
V
l 46.5
50
54
mV
90
µA
20
µA
3
60
V
2.12
mS
l 0.96
1
1.04
V
1.194 1.2
1.206
V
l 1.176
1.2
1.220
V
0.002 0.025
%/V
565
µS
100
150
nA
V_C Standby Input Bias Current
V_SENSE(MAX) (V_SNSP-SNSN)
Fault
SS Pull-Up Current
SS Discharge Current
PWM = 0V
Boost
Buck
V_SS = 0V
–20
20
nA
l 42
51
60
mV
l –56 –47.5 –39
mV
14
µA
1.4
µA
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