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LT1339 数据表(PDF) 2 Page - Linear Technology

部件名 LT1339
功能描述  High Power Synchronous DC/DC Controller
PDF  20 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1339 数据表(HTML) 2 Page - Linear Technology

  LT1339_15 Datasheet HTML 1Page - Linear Technology LT1339_15 Datasheet HTML 2Page - Linear Technology LT1339_15 Datasheet HTML 3Page - Linear Technology LT1339_15 Datasheet HTML 4Page - Linear Technology LT1339_15 Datasheet HTML 5Page - Linear Technology LT1339_15 Datasheet HTML 6Page - Linear Technology LT1339_15 Datasheet HTML 7Page - Linear Technology LT1339_15 Datasheet HTML 8Page - Linear Technology LT1339_15 Datasheet HTML 9Page - Linear Technology Next Button
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2
LT1339
sn1339 1339fas
A
G
A
U
A
R
BSOLUTEXI
TI
S
12VIN = VBOOST = 12V, VC = 2V, TS = 0V, VFB = VREF = 1.25V, CTG = CBG = 3000pF, TA = 25°C unless otherwise noted.
ELECTRICAL C
C
HARA TERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply and Protection
I12VIN
DC Active Supply Current (Note 2)
q
14
20
mA
DC Standby Supply Current
VRUN/SHDN < 0.5V
q
150
250
µA
IBOOST
DC Active Supply Current (Note 2)
2.2
mA
DC Standby Supply Current
VRUN/SHDN < 0.5V
0
µA
VRUN/SHDN Shutdown Rising Threshold
q
1.15
1.25
1.35
V
VSSHYST
Shutdown Threshold Hysteresis
25
mV
ISS
Soft Start Charge Current
q
48
14
µA
VUVLO
Undervoltage Lockout Threshold - Falling
q
8.20
9.00
9.75
V
Undervoltage Lockout Threshold - Rising
q
9.35
9.95
V
Undervoltage Lockout Hysteresis
q
200
350
mV
5V Reference
VREF5
5V Reference Voltage
Line, Load and Temperature
q
4.75
5.00
5.25
V
5V Reference Line Regulation
10V
≤ 12VIN ≤ 15V
q
3
5
mV/V
IREF5
5V Reference Load Range - DC
q
10
mA
Pulse
q
20
mA
5V Reference Load Regulation
0
≤ IREF5 ≤ 20mA
q
– 1.25
– 2
V/A
ISC
5V Reference Short-Circuit Current
45
mA
Supply Voltages
Power Supply Voltage (12VIN)...............– 0.3V to 20V
Topside Supply Voltage (VBOOST)
VTS – 0.3V to VTS + 20V (VMAX = 75V)
Topside Reference Pin Voltage (TS) ......– 0.3V to 60V
Input Voltages
Sense Amplifier Input Common Mode ...– 0.3V to 60V
RUN/SHDN Pin Voltage ...................... – 0.3V to 12VIN
All Other Inputs ....................................... – 0.3V to 7V
Maximum Currents
5V Reference Output Current............................ 65mA
Maximum Temperatures
Operating Ambient Temperature Range
LT1339C ............................................ 0
°C to 70°C
LT1339I ......................................... – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
(Note 1)
ORDER PART
NUMBER
LT1339CN
LT1339CSW
LT1339IN
LT1339ISW
TOP VIEW
N PACKAGE
20-LEAD PDIP
SW PACKAGE
20-LEAD PLASTIC SO WIDE
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
SYNC
5VREF
CT
SL/ADJ
IAVG
SS
VC
SGND
VFB
VREF
VBOOST
TG
TS
12VIN
BG
PGND
PHASE
RUN/SHDN
SENSE–
SENSE+
PACKAGE/ORDER I FOR ATIO
TJMAX = 125°C, θJA = 70°C/W (N)
TJMAX = 125°C, θJA = 85°C/W (SW)
Consult factory for Military grade parts.



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