LT1765ES8 Linear Technology, LT1765ES8 Datasheet - Page 16

• Manufacturer Part Number: LT1765ES8
• Description: IC SW REG STEP-DOWN 3A 8-SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1765ES8

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 20 V
• Current - Output: 3A
• Frequency - Switching: 1.25MHz
• Voltage - Input: 3 ~ 25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

APPLICATIONS INFORMATION
LT1765/LT1765-1.8/LT1765-2.5/
LT1765-3.3/LT1765-5
16
* L1 IS A SINGLE CORE WITH TWO WINDINGS
†
COILTRONICS CTX5-1A
IF LOAD CAN GO TO ZERO, AN OPTIONAL
PRELOAD OF 1k TO 5k MAY BE USED TO
IMPROVE LOAD REGULATION
D1, D3: B220A
INPUT
GND
12V
Figure 11b. Dual Output Converter (Output Currents)
C3
2.2μF
25V
CERAMIC
1200
1000
800
600
400
200
0
V
SHDN
10
IN
SYNC
Figure 11a. Dual Output Converter
LT1765-5
BOOST
GND
5V LOAD CURRENT (mA)
3.3k
R
100
C
CERAMIC
V
C
V
4.7μF
SW
FB
C
4700pF
16V
C
C4
0.18μF
1000
C2
L1B*
1765 F11b
D1
CMDSH-3
D3
10000
CERAMIC
L1A*
D2
4.7mF
6.3V
4.7μF
6.3V
CERAMIC
OUTPUT
5V AT 1.5A
OUTPUT
–5V
1765 F11a
†
AT 1.1A
1765fd