LT1505CG Ver la hoja de datos (PDF) - Linear Technology
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LT1505CG Datasheet PDF : 16 Pages
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LT1505
ABSOLUTE MAXIMUM RATINGS (Note 1)
VCC, CLP, CLN, INFET, UV, 3CELL, FLAG................ 27V
SW Voltage with Respect to GND ........................... – 2V
BOOST, BOOSTC Voltage with Respect to VCC ....... 10V
GBIAS ..................................................................... 10V
SYNC, BAT2, BAT, SENSE, SPIN ............................ 20V
VC, PROG, VFB, 4.1V, 4.2V ........................................ 7V
CAP, SHDN .......................................................... ±3mA
TGATE, BGATE Current Continuous ....................... 0.2A
TGATE, BGATE Output Energy (per cycle) ............... 2µJ
Maximum Operating VCC ......................................... 24V
Operating Ambient Temperature Range ....... 0°C to 70°C
Operating Junction Temperature Range .... 0°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
BOOST 1
TGATE 2
SW 3
SYNC 4
SHDN 5
AGND 6
UV 7
INFET 8
CLP 9
CLN 10
COMP1 11
CAP 12
FLAG 13
4.1V 14
28 PGND
27 BGATE
26 GBIAS
25 BOOSTC
24 VCC
23 BAT
22 SPIN
21 SENSE
20 BAT2
19 PROG
18 VC
17 VFB
16 3CELL
15 4.2V
G PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 100°C/ W
ORDER PART
NUMBER
LT1505CG
Consult factory for Industrial and Military grade parts.
TOP VIEW
BOOST 1
TGATE 2
SW 3
SYNC 4
SHDN 5
AGND 6
UV 7
INFET 8
NC 9
NC 10
GND 11
CAP 12
FLAG 13
4.1V 14
28 PGND
27 BGATE
26 GBIAS
25 BOOSTC
24 VCC
23 BAT
22 SPIN
21 SENSE
20 BAT2
19 PROG
18 VC
17 VFB
16 3CELL
15 4.2V
G PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 100°C/ W
ORDER PART
NUMBER
LT1505CG-1
NOTE: LT1505CG-1 DOES NOT
HAVE INPUT CURRENT
LIMITING FUNCTION.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 18V, VBAT = 12.6V, VCLN = VCC (LT1505), no load on any
outputs unless otherwise noted.
PARAMETER
Overall
CONDITIONS
MIN TYP MAX
Supply Current
Sense Amplifier CA1 Gain and Input Offset Voltage
(With RS2 = 200Ω, RS3 = 200Ω)
(Measured across RS1, Figure 1) (Note 2)
BOOST Pin Current
VCC ≤ 24V
11V ≤ VCC ≤ 24V , 0V ≤ VBAT ≤ 20V
RPROG = 4.93k
RPROG = 4.93k
RPROG = 49.3k
VBOOST = VSW + 8V, 0V ≤ VSW ≤ 20V
TGATE High
TGATE Low
q
12
15
95
100 105
q
92
108
7
10
13
2
3
2
3
BOOSTC Pin Current
Reference
Reference Voltage (Note 3)
Reference Voltage Tolerance
VBOOSTC = VCC + 8V
RPROG = 4.93k, Measured at VFB with VA
Supplying IPROG and Switching Off
11V ≤ VCC ≤ 24V
1
2.453 2.465 2.477
q 2.441
2.489
UNITS
mA
mV
mV
mV
mA
mA
mA
V
V
2
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