LT1073CS8 Linear Technology, LT1073CS8 Datasheet - Page 3

• Manufacturer Part Number: LT1073CS8
• Description: IC DC/DC CONVERTER ADJSTBL 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost), Invertingr

Specifications of LT1073CS8

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adjustable
• Current - Output: 400mA
• Frequency - Switching: 19kHz
• Voltage - Input: 1 ~ 30 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Power - Output: 500mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

temperature range, otherwise specifications are at T
SYMBOL
I
I
I
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: This specification guarantees that both the high and low trip point
of the comparator fall within the 202mV to 222mV range.
Note 3: This specification guarantees that the output voltage of the fixed
versions will always fall within the specified range. The waveform at the
SENSE pin will exhibit a sawtooth shape due to the comparator hysteresis.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
REV
LIM
LEAK
SW2
1.2
1.0
0.8
0.6
0.4
0.2
20
18
16
14
12
10
8
6
4
0
–50
FB Pin Bias Current vs
Temperature
Saturation Voltage Step-Up Mode
(SW2 Pin Grounded)
0
–25
V
0.2
IN
= 1V
0
TEMPERATURE ( C)
0.4
V
PARAMETER
Reverse Battery Current
Current Limit
Current Limit Temperature Coefficient
Switch OFF Leakage Current
Maximum Excursion Below GND
V
IN
IN
I
= 1.25V
= 1.5V
SWITCH
25
0.6
50
(A)
V
IN
0.8
= 2V
75
V
W
IN
V
IN
= 3V
1.0
100
= 5V
1073 G04
1073 G01
U
125
1.2
200
175
150
125
100
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
75
50
25
0
–50
A
0
Switch ON Voltage Step-Down Mode
(SW1 Pin Connected to V
SET Pin Bias Current vs
Temperature
= 25 C. V
CONDITIONS
(Note 5)
220 Between I
Measured at SW1 Pin
I
SW1
0.1
–25
The
0.2
10 A, Switch Off
0
IN
TEMPERATURE ( C)
denotes the specifications which apply over the full operating
0.3
= 1.5V unless otherwise specified.
I
SWITCH
25
Note 4: 100k resistor connected between a 5V source and the AO pin.
Note 5: The LT1073 is guaranteed to withstand continuous application of
1.6V applied to the GND and SW2 pins while V
grounded.
LIM
0.4
50
(A)
and V
0.5
75
IN
0.6
IN
)
100
0.7
1073 G02
1073 G05
125
0.8
1800
1600
1400
1200
1000
1200
1100
1000
800
600
400
200
900
800
700
600
500
400
300
200
100
0
–50
10
“Gain Block” Gain
Maximum Switch Current vs R
MIN
–25
0
TEMPERATURE ( C)
IN
–400
–0.3
TYP
750
400
, I
1
V
R
25
LIM
IN
LIM
100
= 3V
and SW1 pins are
( )
50
LT1073
–350
MAX
10
V
75
IN
V
R
L = 82 H
= 1.5V
IN
L
= 100k
100
= 1.5V
1073 G03
LIM
1073 G06
UNITS
%/ C
3
1000
125
mA
mA
mV
A