LTC3736_15 Datasheet, PDF (2/28 Pages) Linear Technology – Dual 2-Phase, No RSENSE, Synchronous Controller with Output Tracking

LTC3736
ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (V_IN) ........................ – 0.3V to 10V
PLLLPF, RUN/SS, SYNC/FCB,
TRACK, SENSE1⁺, SENSE2⁺,
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
TG1, TG2, BG1, BG2 Peak Output Current (<10µs) ..... 1A
Operating Temperature Range (Note 2) ... –40°C to 85°C
Storage Temperature Range .................. –65°C to 125°C
Junction Temperature (Note 3) ............................ 125°C
Lead Temperature (Soldering, 10 sec)
(LTC3736EGN) ..................................................... 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
NUMBER
24 23 22 21 20 19
I_TH1 1
IPRG2 2
PLLLPF 3
SGND 4
V_IN 5
TRACK 6
18 SYNC/FCB
17 TG1
16 PGND
25
15 TG2
14 RUN/SS
13 BG2
7 8 9 10 11 12
LTC3736EUF
UF PART MARKING
3736
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 37°C/W
EXPOSED PAD (PIN 25) IS PGND
MUST BE SOLDERED TO PCB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
SW1 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 PGND
22 BG1
21 SYNC/FCB
20 TG1
19 PGND
18 TG2
17 RUN/SS
16 BG2
15 PGND
14 SENSE2⁺
13 SW2
GN PACKAGE
24-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 130°C/ W
ORDER PART
NUMBER
LTC3736EGN
ELECTRICAL CHARACTERISTICS _{The ● 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 –200mV
V_IN Falling
V_IN Rising
300 425
µA
9
20
µA
3
10
µA
● 1.95 2.25 2.55
V
● 2.15 2.45 2.75
V
0.45 0.65 0.85
V
Start-Up Current Source
Regulated Feedback Voltage
Output Voltage Line Regulation
RUN/SS = 0V
0°C to 85°C (Note 5)
–40°C to 85°C
2.75V < V_IN < 9.8V (Note 5)
0.4
0.7
1
µA
0.591 0.6 0.609
V
● 0.588 0.6 0.612
V
0.05
0.2
mV/V
3736fa
2