ltc1772bes6-trpbf Linear Technology Corporation, ltc1772bes6-trpbf Datasheet - Page 2

• Manufacturer Part Number: ltc1772bes6-trpbf
• Description: Constant Frequency Current Mode Step-down Dc/dc Controller In Sot-23
• Manufacturer: Linear Technology Corporation

ABSOLUTE
LTC1772
(Note 1)
Input Supply Voltage (V
SENSE
V
PGATE Peak Output Current (<10µs) ......................... 1A
Storage Ambient Temperature Range ... – 65°C to 150°C
Operating Temperature Range
Junction Temperature (Note 3) ............................. 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
range, otherwise specifications are at T
PARAMETER
Input DC Supply Current
Undervoltage Lockout Threshold
Shutdown Threshold (at I
Start-Up Current Source
Regulated Feedback Voltage
Output Voltage Line Regulation
Output Voltage Load Regulation
V
Overvoltage Protect Threshold
Overvoltage Protect Hysteresis
Oscillator Frequency
Gate Drive Rise Time
Gate Drive Fall Time
Peak Current Sense Voltage
ELECTRICAL CHARACTERISTICS
2
FB
FB
Normal Operation
Sleep Mode
Shutdown
UVLO
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
Input Current
, I
TH
–
, PGATE Voltages ............. – 0.3V to (V
/RUN Voltages .............................– 0.3V to 2.4V
W
MAXIMUM
TH
/RUN)
IN
).........................– 0.3V to 10V
W W
A
= 25°C. V
RATINGS
CONDITIONS
Typicals at V
2.4V ≤ V
2.4V ≤ V
2.4V ≤ V
V
V
V
V
(LTC1772C)
(LTC1772E, LTC1772I, LTC1772H)
V
(Note 5) (LTC1772C)
(Note 5) (LTC1772E, LTC1772I, LTC1772H)
2.4V ≤ V
I
I
(Note 5)
Measured at V
V
V
C
C
(Note 6)
TH
TH
U
IN
IN
IN
IN
ITH
FB
FB
LOAD
LOAD
IN
/RUN Sinking 5µA (Note 5)
/RUN Sourcing 5µA (Note 5)
< UVLO Threshold
Falling (LTC1772C)
Falling (LTC1772E, LTC1772I, LTC1772H)
Rising
= 4.2V unless otherwise specified. (Note 2)
= 0.8V
= 0V
/RUN = 0V
IN
= 3000pF
= 3000pF
+ 0.3V)
IN
IN
IN
IN
The
≤ 9.8V
≤ 9.8V
≤ 9.8V, V
≤ 9.8V (Note 5)
IN
FB
= 4.2V (Note 4)
●
denotes specifications that apply over the full operating temperature
ITH
PACKAGE/ORDER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
/RUN = 0V
I
TH
/RUN
GND
V
FB
6-LEAD PLASTIC SOT-23
1
2
3
θ
S6 PACKAGE
JA
TOP VIEW
= 230°C/ W
http://www.linear.com/leadfree/
6
5
4
●
●
●
●
●
●
PGATE
V
SENSE
IN
0.780
0.770
0.820
1.60
1.55
1.85
0.20
0.15
0.25
MIN
500
–
INFORMATION
U
ORDER PART NUMBER
S6 PART MARKING
0.800
0.800
0.860
2.00
2.00
2.10
0.35
0.35
0.05
TYP
270
230
550
120
120
0.5
2.5
2.5
40
40
10
20
LTC1772CS6
LTC1772ES6
LTC1772IS6
LTC1772HS6
8
6
LTIL
LTIM
LTB7
LTBRY
W
0.820
0.830
0.895
MAX
2.30
2.35
2.40
0.50
0.55
0.85
420
370
650
22
10
50
mV/µA
mV/µA
UNITS
U
mV/V
1772fb
kHz
kHz
mV
mV
µA
µA
µA
µA
µA
nA
ns
ns
V
V
V
V
V
V
V
V