LTC1265-5 データシートの表示（PDF） - Linear Technology
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LTC1265-5 Datasheet PDF : 16 Pages
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LTC1265/LTC1265-3.3/LTC1265-5
ABSOLUTE MAXIMUM RATINGS
(Voltages Refer to GND Pin) (Note 1)
Input Supply Voltage (Pins 1, 2, 13) ..........– 0.3V to 13V
DC Switch Current (Pin 14) .................................... 1.2A
Peak Switch Current (Pin 14) ................................. 1.6A
Switch Voltage (Pin 14) .................................. VIN – 13.0
Operating Temperature Range
LTC1265C ............................................... 0° to 70°C
LTC1265I ........................................ – 40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range ....................– 65° to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
PWR VIN 1
VIN 2
LBOUT 3
LBIN 4
CT 5
ITH 6
SENSE– 7
14 SW
13 PWR VIN
12 PGND
11 SGND
10 SHDN
9 N/C (VFB*)
8 SENSE+
S PACKAGE
14-LEAD PLASTIC SO
*ADJUSTABLE OUTPUT VERSION
TJMAX = 125°C, θJA = 110°C/W
Consult factory for Military grade parts.
ORDER
PART NUMBER
LTC1265CS
LTC1265CS-5
LTC1265CS-3.3
LTC1265IS
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VSHDN = 0V, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
IFB
VFB
VOUT
∆VOUT
IQ
VLBTRIP
ILBIN
ILBOUT
V8 – V7
RON
I5
tOFF
Feedback Current into Pin 9
LTC1265
Feedback Voltage
Regulator Output Voltage
Output Voltage Line Regulation
Output Voltage Load Regulation
Burst Mode Operation Output Ripple
Input DC Supply Current (Note 3)
Low-Battery Trip Point
LTC1265C
VIN = 9V, LTC1265I
LTC1265-3.3: ILOAD = 800mA
LTC1265-5: ILOAD = 800mA
VIN = 6.5V to 10V, ILOAD = 800mA
LTC1265-3.3: 10mA < ILOAD < 800mA
LTC1265-5: 10mA < ILOAD < 800mA
ILOAD = 0mA
Active Mode: 3.5V < VIN < 10V
Sleep Mode: 3.5V < VIN < 10V
Sleep Mode: 5V < VIN < 10V (LTC1265-5)
Shutdown: VSHDN = VIN, 3.5V < VIN < 10V
Current into Pin 4
Current Sunk by Pin 3
Current Sense Threshold Voltage
ON Resistance of Switch
CT Pin Discharge Current
Switch Off Time (Note 4)
VLBOUT = 0.4V, VLBIN = 0V
VLBOUT = 5V, VLBIN = 10V
LTC1265: VSENSE– = 5V, V9 = VOUT/4 + 25mV (Forced)
VSENSE– = 5V, V9 = VOUT/4 – 25mV (Forced)
LTC1265-3.3: VSENSE– = VOUT + 100mV (Forced)
VSENSE– = VOUT – 100mV (Forced)
LTC1265-5: VSENSE– = VOUT + 100mV (Forced)
VSENSE– = VOUT – 100mV (Forced)
LTC1265C
LTC1265I
VOUT in Regulation, VSENSE– = VOUT
VOUT = 0V
CT = 390pF, ILOAD = 800mA (LTC1265C)
CT = 390pF, ILOAD = 800mA (LTC1265I)
0.2 1
µA
q 1.22 1.25 1.28
V
q 1.20 1.25 1.30
V
q 3.22 3.3 3.40
V
q 4.9
5 5.2
V
–40 0
40
mV
40 65
mV
60 100
mV
50
mVP-P
1.8 2.4
mA
160 230
µA
160 230
µA
5
15
µA
1.15 1.25 1.35
V
0.5
µA
0.5 1.0 1.5
mA
1.0
µA
25
mV
130 150 180
mV
25
mV
130 150 180
mV
25
mV
130 150 180
mV
q
0.3 0.60
Ω
0.3 0.70
Ω
40 60 100
µA
2
10
µA
q4
5
6
µs
q 3.5
5
7
µs
2
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