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LT1309CS8 数据表(PDF) 2 Page - Linear Technology

部件名 LT1309CS8
功能描述  500kHz Micropower DC/DC Converter for Flash Memory
PDF  8 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1309CS8 数据表(HTML) 2 Page - Linear Technology

  LT1309CS8 Datasheet HTML 1Page - Linear Technology LT1309CS8 Datasheet HTML 2Page - Linear Technology LT1309CS8 Datasheet HTML 3Page - Linear Technology LT1309CS8 Datasheet HTML 4Page - Linear Technology LT1309CS8 Datasheet HTML 5Page - Linear Technology LT1309CS8 Datasheet HTML 6Page - Linear Technology LT1309CS8 Datasheet HTML 7Page - Linear Technology LT1309CS8 Datasheet HTML 8Page - Linear Technology  
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2
LT1309
A
G
A
U
A
R
BSOLUTEXI
TI
S
VCC Voltage............................................................... 7V
VSW Voltage ............................................................ 20V
VSENSE Voltage ....................................................... 20V
VON/OFF Voltage......................................................... 7V
VSEL Voltage ............................................................. 7V
ILIM Voltage .............................................................. 7V
Maximum Power Dissipation ............................ 500mW
Operating Temperature Range ..................... 0
°C to 70°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
S8 PART MARKING
ELECTRICAL C
C
HARA TERISTICS T
A = 25°C, VCC = 5V, VON/OFF = 3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
VSENSE = 12V
650
900
µA
Quiescent Current, Shutdown
VON/OFF = 0.2V
9
15
µA
Input Voltage Range
2
6
V
Output Sense Voltage
q
11.5
12
12.6
V
Output Referred Comparator Hysteresis
35
mV
fOSC
Oscillator Frequency
Current Limit Not Asserted
400
500
700
kHz
DC
Maximum Duty Cycle
q
80
85
92
%
tON
Switch ON Time
1.7
µs
Reference Line Regulation
2V < VIN < 6V
0.06
0.15
%/V
VCESAT
Switch Saturation Voltage
ISW = 0.5A
230
350
mV
Switch Leakage Current
VSW = 12V, Switch Off
0.1
10
µA
Switch Current Limit
VIN = 5V, Soft Start Floating
400
600
900
mA
VIN = 3V, Soft Start Floating
450
650
950
mA
Soft Start Current
Soft Start Grounded
80
120
µA
ON/OFF Input Voltage Low
0.8
V
ON/OFF Input Voltage High
1.6
V
ON/OFF Bias Current
VON/OFF = 5V
16.0
24.0
µA
VON/OFF = 3V
8.0
14.0
µA
VON/OFF = 0V
0.1
1.0
µA
Sense Pin Input Current
50.0
90
µA
VON/OFF = 0.2V
0.1
1
µA
VPP VALID Threshold
VSENSE Rising (High to Low Transition)
VSENSE – 200mV
VPP VALID Output Voltage Low
ISINK = 100µA
0.13
0.3
V
VPP VALID Output Voltage High
ISOURCE = 2.5µA
4
4.5
V
LT1309CS8
1309
TJMAX = 150°C, θJA = 150°C/W
Consult factory for Industrial and Military grade parts.
The q denotes specifications which apply over the full operating
temperature range.
1
2
3
4
8
7
6
5
TOP VIEW
ON/OFF
SENSE
VPP VALID
GND
SOFT START
VCC
PGND
VSW
S8 PACKAGE
8-LEAD PLASTIC SO



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