LTC1772HS6 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1772HS6 Datasheet PDF : 12 Pages
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LTC1772
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (VIN).........................– 0.3V to 10V
SENSE–, PGATE Voltages ............. – 0.3V to (VIN + 0.3V)
VFB, ITH /RUN Voltages .............................– 0.3V to 2.4V
PGATE Peak Output Current (<10µs) ......................... 1A
Storage Ambient Temperature Range ... – 65°C to 150°C
Operating Temperature Range
LTC1772CS6 ........................................... 0°C to 70°C
LTC1772ES6 (Note 2) ........................ – 40°C to 85°C
LTC1772IS6 (Note 2) ......................... – 40°C to 85°C
LTC1772HS6 (Notes 2,3) ................. – 40°C to 140°C
Junction Temperature (Note 3) ............................. 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
ORDER PART NUMBER
TOP VIEW
ITH/RUN 1
GND 2
VFB 3
6 PGATE
5 VIN
4 SENSE–
S6 PACKAGE
6-LEAD PLASTIC SOT-23
θJA = 230°C/ W
LTC1772CS6
LTC1772ES6
LTC1772IS6
LTC1772HS6
S6 PART MARKING
LTIL
LTIM
LTB7
LTBRY
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.
ELECTRICAL CHARACTERISTICS The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 4.2V unless otherwise specified. (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input DC Supply Current
Normal Operation
Sleep Mode
Shutdown
UVLO
Undervoltage Lockout Threshold
Shutdown Threshold (at ITH /RUN)
Typicals at VIN = 4.2V (Note 4)
2.4V ≤ VIN ≤ 9.8V
2.4V ≤ VIN ≤ 9.8V
2.4V ≤ VIN ≤ 9.8V, VITH /RUN = 0V
VIN < UVLO Threshold
270 420
µA
230 370
µA
8
22
µA
6
10
µA
VIN Falling (LTC1772C)
● 1.60 2.00 2.30
V
VIN Falling (LTC1772E, LTC1772I, LTC1772H)
● 1.55 2.00 2.35
V
VIN Rising
1.85 2.10 2.40
V
(LTC1772C)
(LTC1772E, LTC1772I, LTC1772H)
● 0.20 0.35 0.50
V
● 0.15 0.35 0.55
V
Start-Up Current Source
Regulated Feedback Voltage
VITH/RUN = 0V
(Note 5) (LTC1772C)
(Note 5) (LTC1772E, LTC1772I, LTC1772H)
0.25 0.5 0.85
µA
● 0.780 0.800 0.820
V
● 0.770 0.800 0.830
V
Output Voltage Line Regulation
Output Voltage Load Regulation
VFB Input Current
Overvoltage Protect Threshold
Overvoltage Protect Hysteresis
2.4V ≤ VIN ≤ 9.8V (Note 5)
ITH/RUN Sinking 5µA (Note 5)
ITH/RUN Sourcing 5µA (Note 5)
(Note 5)
Measured at VFB
0.820
0.05
2.5
2.5
10
0.860
20
50
0.895
mV/V
mV/µA
mV/µA
nA
V
mV
Oscillator Frequency
Gate Drive Rise Time
Gate Drive Fall Time
Peak Current Sense Voltage
VFB = 0.8V
VFB = 0V
CLOAD = 3000pF
CLOAD = 3000pF
(Note 6)
500 550 650
kHz
120
kHz
40
ns
40
ns
120
mV
1772fb
2
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