LTC1875EGN Linear Technology, LTC1875EGN Datasheet - Page 17

• Manufacturer Part Number: LTC1875EGN
• Description: IC REG STEP-DWN SYNC 1.5A 16SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1875EGN

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 6 V
• Current - Output: 1.5A
• Frequency - Switching: 550kHz
• Voltage - Input: 2.65 ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

APPLICATIO S I FOR ATIO
U
POWER
BOLD LINES INDICATE HIGH CURRENT PATHS
GOOD
C
C
L1: TOKO A921CY-4R7M
*1.5A IS THE MAXIMUM OUTPUT CURRENT
C
220pF
C
0.1 F
IN1
OUT
SVIN
C2
U
Figure 9a. Single Lithium-Ion to 2.5V/1.5A Regulator from Design Example
, C
: TDK CERAMIC C4532X5R0J476M
0.1 F
IN2
C
R
100k
: TAIYO-YUDEN CERAMIC JMK316BJ106ML
SS
R
PG
1M
SS
R
150k
C
C
47pF
Figure 9b. Efficiency vs Output Current for Design Example
C1
W
14
16
2
4
PGOOD
RUN/SS
PLL_LPF
I
TH
100
SV
95
90
85
80
75
70
65
60
0.1
IN
13
LTC1875
V
L = 4.7 H
OUT
U
SYNC/MODE
= 2.5V
V
1
OUTPUT CURRENT (mA)
PGND
PGND
SGND
IN
15
SWP
SWP
SWN
SWN
PV
PV
V
= 4.2V
FB
IN
IN
V
R
IN
10
SVIN
8
9
7
10
5
12
6
11
3
1
= 3V
10
V
IN
R2
412k
R1 887k
10 F
= 3.6V
100
C
4.7 H
IN1
L1
1875 F09b
1000
C
47 F
OUT
C
10 F
IN2
1875 F09a
V
2.65V TO 4.2V
GND
V
2.5V/1.5A
IN
OUT
*
LTC1875
17
1875f