LTC3417A_15 Datasheet, PDF (2/22 Pages) Linear Technology – Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator

LTC3417A
Absolute Maximum Ratings (Note 1)
V_IN1, V_IN2 Voltages....................................... – 0.3V to 6V
SYNC/MODE, SW1, SW2, RUN1,
RUN2, V_FB1, V_FB2, PHASE, FREQ,
I_TH1, I_TH2 Voltages............... – 0.3V to (V_IN1/V_IN2 + 0.3V)
V_IN1 – V_IN2, V_IN2 – V_IN1 ........................................... 0.3V
PGOOD Voltage............................................ – 0.3V to 6V
Operating Ambient Temperature Range
(Note 2) ...................................................– 40°C to 85°C
Junction Temperature (Notes 7, 8) ...................... 125°C
Storage Temperature Range....................– 65°C to 125°C
Pin Configuration
TOP VIEW
RUN1 1
V_IN1 2
ITH1 3
V_FB1 4
V_FB2 5
I_TH2 6
RUN2 7
V_IN2 8
16 PGND1
15 SW1
14 PHASE
13 GNDA
17
12 FREQ
11 PGOOD
10 SW2
9 SYNC/MODE
DHC PACKAGE
16-LEAD (3mm × 5mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 43°C/W
EXPOSED PAD (PIN 17) IS PGND2/GNDD, MUST BE SOLDERED TO PCB
TOP VIEW
GNDD 1
20 GNDD
RUN1 2
19 PGND1
V_IN1 3
I_TH1 4
V_FB1 5
V_FB2 6
I_TH2 7
RUN2 8
18 SW1
17 PHASE
16 GNDA
21
15 FREQ
14 PGOOD
13 SW2
V_IN2 9
PGND2 10
12 SYNC/MODE
11 PGND2
FE PACKAGE
20-LEAD PLASTIC TSSOP
T_JMAX = 125°C, θ_JA = 38°C/W
EXPOSED PAD (PIN 21) IS PGND2/GNDD, MUST BE SOLDERED TO PCB
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3417AEDHC#PBF
LTC3417AEDHC#TRPBF 3417A
16-Lead (3mm × 3mm) Plastic DFN
LTC3417AEFE#PBF
LTC3417AEFE#TRPBF LTC3417AEFE
20-Lead Plastic TSSOP
LTC3417AIFE#PBF
LTC3417AIFE#TRPBF LTC3417AIFE
20-Lead Plastic TSSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
electrical characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V unless otherwise specified. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
V_IN1, V_IN2
Operating Voltage Range
V_IN1 = V_IN2
2.25
5.5
I_FB1, I_FB2
Feedback Pin Input Current
(Note 3)
± 0.1
V_FB1, V_FB2
∆V_LINEREG
Feedback Voltage
(Note 3)
Reference Voltage Line Regulation. %/V is the V_IN = 2.25V to 5V (Note 3)
Percentage Change in V_OUT with a Change in V_IN
● 0.784
0.8 0.816
0.04 0.2
V_LOADREG
g_m(EA)
Output Voltage Load Regulation
Error Amplifier Transconductance
I_TH1, I_TH2 = 0.36V (Note 3)
I_TH1, I_TH2 = 0.84V (Note 3)
I_TH1, I_TH2(PINLOAD) = ±5µA (Note 3)
0.02 0.2
–0.02 –0.2
1400
UNITS
V
µA
V
%/V
%
%
µS
3417afc
2