LT1612EMS8 Linear Technology, LT1612EMS8 Datasheet - Page 3

• Manufacturer Part Number: LT1612EMS8
• Description: IC CONV DC/DC PWM STEPDOWN 8MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1612EMS8

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: Adj to 0.6V
• Current - Output: 500mA
• Frequency - Switching: 800kHz
• Voltage - Input: 2 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

SYMBOL PARAMETER
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1612E is guaranteed to meet performance specifications
from 0 C to 70 C. Specifications over the –40 C to 85 C operating
temperature range, otherwise specifications are T A = 25 C, V IN = V SHDN = 3V
TYPICAL PERFOR A CE CHARACTERISTICS
0.64
0.63
0.62
0.61
0.60
0.59
– 50
FB Voltage vs Temperature
SHDN Pin Current
BOOST Pin Current
Switch Current Limit (Note 4)
Burst Mode Operation Current Limit
Switch Voltage Drop
Rectifier Voltage Drop
SW Pin Leakage
–25
TEMPERATURE ( C)
0
25
50
W
75
1612 • G01
U
100
190
180
170
160
150
140
130
120
110
100
– 50
Quiescent Current vs Temperature
MODE = 0V
CONDITIONS
SHDN = 2V
SHDN = 5V
BOOST = V
Duty Cycle = 0%
MODE = 0V
I
I
V
SW
RECT
SW
–25
The
= 500mA
= 5V, V
= 500mA
TEMPERATURE ( C)
0
IN
denotes specifications which apply over the full operating
SHDN
+ 2V
25
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Bias current flows out of the FB pin.
Note 4: Duty cycle affects current limit due to slope compensation.
= 0V
50
MODE = OV
MODE = 5V
75
1612 • G02
100
–20
–10
–12
–14
–16
–18
– 2
– 4
– 6
– 8
0
– 50
FB Pin Bias Current
MIN
600
550
– 25
TEMPERATURE ( C)
TYP
710
650
180
200
300
0
10
30
4
25
MAX
900
900
280
400
15
45
1
50
LT1612
sn1612 1612fs
75
1612 • G03
UNITS
3
mA
mA
mA
mA
mV
mV
100
A
A
A