LTC3417 Datasheet, PDF (2/20 Pages) Linear Technology – Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator

LTC3417
ABSOLUTE AXI U RATI GS (Note 1)
V_IN1, V_IN2 Voltages ..................................... – 0.3V to 6V
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
DFN Package ................................... – 65°C to 125°C
TSSOP Package ............................... – 65°C to 150°C
UW U
PACKAGE/ORDER I FOR ATIO
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 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
ORDER PART
NUMBER
LTC3417EDHC
DHC PART MARKING
3417
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 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 Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LTC3417EFE
ELECTRICAL CHARACTERISTICS
The ● denotes 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
I_FB1, I_FB2
V_FB1, V_FB2
∆V_LINEREG
V_LOADREG
g_m(EA)
Operating Voltage Range
Feedback Pin Input Current
Feedback Voltage
Reference Voltage Line Regulation. %/V is the
Percentage Change in V_OUT with a Change in V_IN
Output Voltage Load Regulation
Error Amplifier Transconductance
V_IN1 = V_IN2
(Note 3)
(Note 3)
V_IN = 2.25V to 5V (Note 3)
I_TH1, I_TH2 = 0.36V (Note 3)
I_TH1, I_TH2 = 0.84V (Note 3)
I_TH1, I_TH2(PINLOAD) = ±5µA (Note 3)
● 2.25
5.5
± 0.1
● 0.784 0.8 0.816
0.04
0.2
0.02
0.2
–0.02 –0.2
1400
UNITS
V
µA
V
%/V
%
%
µS
3417fb
2