LTC3711 Datasheet, PDF (2/24 Pages) Linear Technology – 5-Bit Adjustable, Wide Operating Range, No RSENSE

LTC3711
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage
V_IN, I_ON ..................................................36V to – 0.3V
Boosted Topside Driver Supply Voltage
BOOST .................................................. 42V to – 0.3V
SW, SENSE⁺ Voltages ................................. 36V to – 5V
EXTV_CC, (BOOST – SW), RUN/SS,
VID0-VID4, PGOOD Voltages ..................... 7V to – 0.3V
FCB, V_ON, V_RNG Voltages .......... INTV_CC + 0.3V to – 0.3V
I_TH, V_FB, V_OSENSE Voltages ....................... 2.7V to – 0.3V
TG, BG, INTV_CC, EXTV_CC Peak Currents .................... 2A
TG, BG, INTV_CC, EXTV_CC RMS Currents .............. 50mA
Operating Ambient Temperature Range
LTC3711EGN (Note 2) ........................ – 40°C to 85°C
Junction Temperature (Note 3) ............................ 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VID2 1
RUN/SS 2
V_ON 3
PGOOD 4
V_RNG 5
FCB 6
I_TH 7
SGND 8
I_ON 9
V_FB 10
V_OSENSE 11
VID3 12
24 VID1
23 VID0
22 BOOST
21 TG
20 SW
19 SENSE⁺
18 PGND
17 BG
16 INTV_CC
15 V_IN
14 EXTV_CC
13 VID4
GN PACKAGE
24-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 130°C/ W
ORDER PART
NUMBER
LTC3711EGN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS _{The q denotes specifications which apply over the full operating}
temperature range, otherwise specifications are T_A = 25°C. V_IN = 15V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
Main Control Loop
I_Q
Input DC Supply Current
Normal
Shutdown Supply Current
900 2000
15
30
V_FB
∆V_FB(LINEREG)
∆V_FB(LOADREG)
I_FB
g_m(EA)
V_FCB
I_FCB
t_ON
Feedback Reference Voltage
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
Feedback Input Current
Error Amplifier Transconductance
Forced Continuous Threshold
Forced Continuous Pin Current
On-Time
t_ON(MIN)
t_OFF(MIN)
V_SENSE(MAX)
Minimum On-Time
Minimum Off-Time
Maximum Current Sense Threshold
V_PGND – V_SENSE+
V_SENSE(MIN)
Minimum Current Sense Threshold
V_PGND – V_SENSE+
∆V_FB(OV)
V_FB(UV)
Output Overvoltage Fault Threshold
Output Undervoltage Fault Threshold
I_TH = 1.2V (Note 4)
V_IN = 4V to 30V, I_TH = 1.2V (Note 4)
I_TH = 0.5V to 1.9V (Note 4)
V_FB = 0.8V
I_TH = 1.2V (Note 4)
V_FCB = 0.8V
I_ON = 60µA, V_ON = 1.5V
I_ON = 30µA, V_ON = 1.5V
I_ON = 180µA, V_ON = 0V
I_ON = 60µA, V_ON = 1.5V
V_RNG = 1V, V_FB = 0.76V
V_RNG = 0V, V_FB = 0.76V
V_RNG = INTV_CC, V_FB = 0.76V
V_RNG = 1V, V_FB = 0.84V
V_RNG = 0V, V_FB = 0.84V
V_RNG = INTV_CC, V_FB = 0.84V
q 0.792
q
q 1.4
q 0.76
212
425
113
q 79
158
5.5
520
0.800
0.002
– 0.05
–5
1.7
0.8
–1
250
500
50
250
133
93
186
– 67
– 47
– 93
7.5
600
0.808
– 0.3
± 50
2
0.84
–2
288
575
100
400
153
107
214
9.5
680
2
UNITS
µA
µA
V
%/V
%
nA
mS
V
µA
ns
ns
ns
ns
mV
mV
mV
mV
mV
mV
%
mV
3711f