LTC3737 Datasheet, PDF (2/24 Pages) Linear Technology – Dual 2-Phase, No RSENSE DC/DC Controller with Output Tracking

LTC3737
ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (V_IN), PV_IN1, PV_IN2,
SENSE1⁺, SENSE2⁺ .................................. – 0.3V to 10V
PGATE1, PGATE2, PLLLPF, RUN/SS, SYNC/MODE,
TRACK, IPRG1, IPRG2 Voltages .... – 0.3V to (V_IN + 0.3V)
V_FB1, V_FB2, I_TH1, I_TH2 Voltages .................. – 0.3V to 2.4V
SW1, SW2 Voltages ............ –2V to V_IN + 1V or 10V Max
PGOOD ..................................................... – 0.3V to 10V
PGATE1, PGATE2 Peak Output Current (<10µs) ......... 1A
Operating Temperature Range (Note 2) ... –40°C to 85°C
Storage Ambient Temperature Range
QFN Package .................................... –65°C to 125°C
SSOP Package .................................. –65°C to 150°C
Junction Temperature (Note 3) ............................ 125°C
Lead Temperature (Soldering, 10sec)
LTC3737EGN ................................................... 300°C
UW U
PACKAGE/ORDER I FOR ATIO
SW1
(SENSE1^–)
1
IPRG1 2
V_FB1 3
I_TH1 4
IPRG2 5
PLLLPF 6
SGND 7
V_IN 8
TRACK 9
V_FB2 10
I_TH2 11
PGOOD 12
TOP VIEW
24 SENSE1⁺
23 PV_IN1
22 NC
21 SYNC/MODE
20 PGATE1
19 PGND
18 PGATE2
17 RUN/SS
16 NC
15 PV_IN2
14 SENSE2⁺
13
SW2
(SENSE2^–)
GN PACKAGE
24-LEAD (NARROW) PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 130°C/W
ORDER PART
NUMBER
LTC3737EGN
TOP VIEW
I_TH1 1
IPRG2 2
PLLLPF 3
SGND 4
V_IN 5
TRACK 6
24 23 22 21 20 19
18
SYNC/
MODE
17 PGATE1
16 PGND
25
15 PGATE2
14 RUN/SS
13 NC
7 8 9 10 11 12
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 37°C/W
EXPOSED PAD IS PGND (PIN 25) MUST BE SOLDERED TO PCB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LTC3737EUF
UF PART
MARKING
3737
ELECTRICAL CHARACTERISTICS _{The q denotes specifications that apply over the full operating temperature}
range, otherwise specifications are at T_A = 25°C. V_IN = 4.2V unless otherwise specified.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loops
Input DC Supply Current
Sleep Mode
Shutdown
UVLO
Undervoltage Lockout Threshold
Shutdown Threshold at RUN/SS
(Note 4)
RUN/SS = 0V
V_IN < UVLO Threshold
V_IN Falling
V_IN Rising
220 325
µA
9
20
µA
3
10
µA
q 1.95 2.25 2.55
V
q 2.15 2.45 2.75
V
0.45 0.65 0.85
V
Start-Up Current Source
RUN/SS = 0V
0.5
0.7
1
µA
Regulated Feedback Voltage
0°C to 85°C (Note 5)
–40°C to 85°C
0.591 0.6 0.609
V
q 0.588 0.6 0.612
V
Output Voltage Line Regulation
2.75V < V_IN < 9.8V (Note 5)
0.05
0.2
mV/V
3737f
2