LT1612ES8#PBF Linear Technology, LT1612ES8#PBF Datasheet - Page 9

• Manufacturer Part Number: LT1612ES8#PBF
• Description: IC CONV DC/DC PWM STEPDOWN 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1612ES8#PBF

• 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-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

TYPICAL APPLICATIONS
CERAMIC
10 F
V
V
10 F
2V
5V
IN
IN
C1
C1
C1: TAIYO-YUDEN JMK325BJ106MN
C2: PANASONIC EEFCDOF680R
L1: SUMIDA CD43-100
C1: TAIYO-YUDEN LMK325BJ106MN
C2: TAIYO-YUDEN LMK325BJ226MN
L1: SUMIDA CD43-100
SHDN
MODE
V
SHDN
V
MODE
V
V
IN
C
IN
C
33.2k
30.1k
LT1612
5V to 2.5V Converter
LT1612
330pF
2V to 0.9V Converter
680pF
BOOST
BOOST
GND
GND
SW
SW
FB
FB
0.1 F
0.1 F
232k
R2
U
332k
10 H
100pF
10 H
105k
L1
20pF
R1
L1
1M
C2
68 F
3.15V
C2
22 F
CERAMIC
V
0.9V
500mA
V
2.5V
500mA
OUT
1612 TA09
1612 TA07
OUT
Efficiency for LT1612 vs Linear Regulator.
80
70
60
50
40
30
20
10
85
80
75
70
65
60
55
50
1
5V to 2.5V Converter Efficiency
1
V
V
LOAD CURRENT (mA)
IN
LOAD CURRENT (mA)
OUT
10
10
= 3V (LINEAR)
V
IN
= 0.9V.
= 2V (LINEAR)
100
100
V
V
IN
IN
= 2V
= 3V
1612 TA10
1612 TA08
1000
1000
LT1612
sn1612 1612fs
9