LT1109A Linear Technology, LT1109A Datasheet - Page 2

• Manufacturer Part Number: LT1109A
• Description: Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V/ 12V
• Manufacturer: Linear Technology

A
LT1109A
(Voltages Referred to GND Pin)
Supply Voltage (V
SW Pin Voltage ........................................ – 0.4V to 50V
Feedback Pin Voltage (LT1109A) ........................... 5.5V
Shutdown Pin Voltage ........................................... 5.5V
PACKAGE/ORDER I FOR ATIO
SYMBOL
I
V
V
f
t
DC
V
V
V
I
I
The
temperature range.
2
ELECTRICAL C
Q
OSC
ON
IH
L
IN
OUT
CESAT
IH
IL
PGND
BSOLUTE
SW
V
NC
IN
T
JMAX
denotes specifications which apply over the full operating
1
2
3
4
8-LEAD PLASTIC DIP
*FIXED VERSIONS
= 90 C,
N8 PACKAGE
PARAMETER
Quiescent Current
Input Voltage
Comparator Trip Point Voltage
Output Sense Voltage
Comparator Hysteresis
Output Voltage Ripple
Oscillator Frequency
Switch On Time
Duty Cycle
Switch Saturation Voltage
Switch Leakage Current
SHUTDOWN Pin High
SHUTDOWN Pin Low
SHUTDOWN Pin Input Current
SHUTDOWN Pin Input Current
TOP VIEW
JA
= 130 C/W
IN
W
8
7
6
5
) ................................ – 0.4V to 20V
A
FB (SENSE)*
SHUTDOWN
NC
GND
HARA TERISTICS
XI
W
U
C
U
W
LT1109ACN8
LT1109ACN8-5
LT1109ACN8-12
ORDER PART
NUMBER
R
A
W
TI
U
CONDITIONS
Switch Off
LT1109A
LT1109A-5; 2V V
LT1109A-12; 2V V
LT1109A
LT1109A-5
LT1109A-12
Full Load
V
V
V
V
0V V
G
IN
IN
SW
SHUTDOWN
= 3V, I
= 5V, I
S
T
= 12V
A
SHUTDOWN
U
PGND
= 25 C, V
SW
V
NC
SW
SW
IN
T
= 650mA
= 1A
JMAX
2.0V
1
2
3
4
8-LEAD PLASTIC SO
*FIXED VERSIONS
Switch Current .......................................................... 2A
Maximum Power Dissipation ............................ 300mW
Operating Temperature Range .................... 0 C to 70 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
S8 PACKAGE
= 90 C,
IN
IN
0.8V
TOP VIEW
IN
= 3V, unless otherwise noted.
5V
12V
JA
= 150 C/W
8
7
6
5
FB (SENSE)*
SHUTDOWN
NC
GND
LT1109ACS8
LT1109ACS8-5
LT1109ACS8-12
11.52
MIN
1.20
105
4.75
4.1
3.8
2.0
ORDER PART
60
95
2
NUMBER
12.00
1.25
5.00
TYP
360
120
5.5
0.5
0.7
25
60
68
8
1
12.55
MAX
1.30
12.5
0.65
1.00
500
120
135
155
5.25
6.9
7.4
0.8
77
10
10
20
9
50
MARKING
S8 PART
1109A
109A5
109A1
UNITS
kHz
kHz
mV
mV
mV
%
A
V
V
V
V
V
V
A
V
V
A
A
s
s