LTC3418 Datasheet, PDF (2/20 Pages) Linear Technology – 8A, 4MHz, Monolithic Synchronous Step-Down Regulator

LTC3418
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage .................................. – 0.3V to 6V
I_TH, RUN/SS, V_FB Voltages ......................... – 0.3V to V_IN
SYNC/MODE Voltages ............................... – 0.3V to V_IN
TRACK Voltage .......................................... –0.3V to V_IN
SW Voltage .................................. – 0.3V to (V_IN + 0.3V)
Operating Ambient Temperature Range
(Note 2) .............................................. – 40°C to 85°C
Junction Temperature (Note 5) ............................. 125°C
Storage Temperature Range ................. –65°C to 125°C
PACKAGE/ORDER INFORMATION
TOP VIEW
SW 1
SW 2
PV_IN 3
PV_IN 4
PGOOD 5
R_T 6
RUN/SS 7
SGND 8
PV_IN 9
PV_IN 10
SW 11
SW 12
38 37 36 35 34 33 32
39
13 14 15 16 17 18 19
31 SW
30 SW
29 PV_IN
28 PV_IN
27 SYNC/MODE
26 I_TH
25 V_FB
24 SV_IN
23 PV_IN
22 PV_IN
21 SW
20 SW
UHF PACKAGE
38-LEAD (7mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W, θ_JC = 1°C/W
EXPOSED PAD (PIN 39) IS PGND AND MUST BE SOLDERED TO PCB
ORDER PART NUMBER
LTC3418EUHF
UH PART MARKING
3418
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.3V. (Note 2)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
V_IN
Input Voltage Range
V_FB
Regulated Feedback Voltage
0°C ≤ T_A ≤ 85°C
(Note 3)
2.25
0.792
● 0.784
0.800
0.800
5.5
0.808
0.816
I_FB
∆V_FB
V_LOADREG
Feedback Input Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
V_TRACK
Tracking Voltage Offset
Tracking Voltage Range
V_IN = 2.5V to 5.5V (Note 3)
Measured in Servo Loop, V_ITH = 0.36V ●
Measured in Servo Loop, V_ITH = 0.84V ●
V_TRACK = 0.4V
0
100
200
0.04
0.2
0.02
0.2
–0.02
–0.2
15
0.8
I_TRACK
∆V_PGOOD
R_PGOOD
I_Q
TRACK Input Current
Power Good Range
Power Good Resistance
Input DC Bias Current
Active Current
Shutdown
(Note 4)
V_FB = 0.7V, V_ITH = 1V
V_RUN = 0V
100
200
±7.5
±9
100
150
380
450
0.03
1.5
UNITS
V
V
V
nA
%/V
%
%
mV
V
nA
%
Ω
µA
µA
3418f
2