LTC1266 Ver la hoja de datos (PDF) - Linear Technology
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LTC1266 Datasheet PDF : 20 Pages
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LTC1266
LTC1266-3.3/LTC1266-5
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (Pins 2, 5) ............... 20V to – 0.3V
Continuous Output Current (Pins 1, 16) .............. 50mA
Sense Voltages (Pins 8, 9) ....................... 13V to – 0.3V
SHDN Voltage (Pin 11) ............................. 12V to – 0.3V
PINV, BINH, LBIN (Pins 3, 4, 13)................20V to – 0.3V
LBOUT Output Current ........................................... 12mA
Operating Ambient Temperature Range ...... 0°C to 70°C
Industrial Temperature Range ................ – 40°C to 85°C
Extended Commercial
Temperature Range ........................... – 40°C to 85°C
Junction Temperature (Note 2) ............................ 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
TDRIVE 1
PWR VIN 2
PINV 3
BINH 4
VIN 5
CT 6
ITH 7
SENSE– 8
16 BDRIVE
15 PGND
14 LBOUT
13 LBIN
12 SGND
11 SHDN
10 VFB (NC*)
9 SENSE+
S PACKAGE
16-LEAD PLASTIC SO
*FIXED OUTPUT VERSIONS
TJMAX = 125°C, θJA = 110°C/ W
ORDER PART
NUMBER
LTC1266CS
LTC1266CS-3.3
LTC1266CS-5
LTC1266ACS
LTC1266IS
LTC1266IS-3.3
LTC1266IS-5
LTC1266AIS
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VSHDN = VBINH = 0V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
VFB
Feedback Voltage
LTC1266ACS
LTC1266CS
VIN = 9V, ILOAD = 700mA, VPINV = VPWR = 14V,
Topside Switch = N-Ch
q 1.252 1.265 1.278
q 1.210 1.265 1.290
IFB
Feedback Current (LTC1266 Only)
VOUT
Regulated Output Voltage
LTC1266CS-3.3
LTC1266CS-5
VIN = 9V, ILOAD = 700mA, VPINV = VPWR = 14V,
Topside Switch = N-Ch
q
0.2 1
q 3.23 3.33 3.43
q 4.90 5.05 5.20
∆VOUT
IQ1
IQ2
Output Ripple (Burst Mode Operation)
Output Voltage Line Regulation
Output Voltage Load Regulation
LTC1266-3.3
LTC1266-3.3
LTC1266-5
LTC1266-5
VIN Pin DC Supply Current (Note 3)
Normal Mode
Sleep Mode
Shutdown
PWR VIN DC Supply Current (Note 3)
Normal Mode
Sleep Mode
Shutdown
ILOAD = 150mA
ILOAD = 50mA
VPINV = 0V, Topside Switch = P-Ch, VIN = 7V to 12V
VPINV = VPWR, Topside Switch = N-Ch, VIN = 7V to 12V
5mA < ILOAD < 2A, RSENSE = 0.05Ω
Burst Mode Operation Enabled, VBINH = 0V
Burst Mode Operation Inhibited, VBINH = 2V
Burst Mode Operation Enabled, VBINH = 0V
Burst Mode Operation Inhibited, VBINH = 2V
3.5V < VIN < 18V
3.5V < VIN < 18V
VSHDN = 2.1V, 3.5V < VIN < 18V
3.5V < PWR VIN < 18V
3.5V < PWR VIN < 18V
VSHDN = 2.1V, 3.5V < PWR VIN < 18V
50
– 40 0
40
– 40 0
40
q
40 65
q
15 25
q
60 100
q
25 40
2.1 3.0
170 250
25 50
20 40
1
5
1
5
UNITS
V
V
µA
V
V
mVP-P
mV
mV
mV
mV
mV
mV
mA
µA
µA
µA
µA
µA
2
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