LTC3850EUF#PBF Linear Technology, LTC3850EUF#PBF Datasheet - Page 33

• Manufacturer Part Number: LTC3850EUF#PBF
• Description: IC CNTRLR STP DWN SYNC 28-QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3850EUF#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 23.3 V
• Current - Output: 100mA
• Frequency - Switching: 250kHz ~ 780kHz
• Voltage - Input: 4 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Primary Input Voltage: 24V
• No. Of Outputs: 2
• Output Current: 100mA
• No. Of Pins: 28
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 4V To 24V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

TYPICAL APPLICATIONS
V
V
OUT1
1.8V
OUT1
2.5V
5A
5A
L1, L2: TOKO FDV0630 0.75µH
M1, M2: VISHAY SILICONIX Si4816BDY
C
L1: TOKO FDV0630 2.2µH
L2: TOKO FDV0630 0.75µH
M1, M2: VISHAY SILICONIX Si4816BDY
C
OUT1
OUT1
0.75µH
C
100µF
X2
2.2µH
V
C
100µF
X2
12V
OUT1
L1
OUT1
IN1
L1
, C
3.74k
, C
1.2k
25.5k
43.2k
1%
47pF
1%
1%
47pF
OUT2
1%
OUT2
: TAIYO YUDEN JMK325BJ107MM
: TAIYO YUDEN JMK325BJ107MM
20k
1%
4.7µF
20k
1%
M1
Figure 19. 1.8V/5A, 1.2V/5A Core-I/O Converter with a 5V Input Synchronized at 750kHz
M1
2.94k
1%
1.40k
1%
4.7µF
4.7µF
14k
1%
10k
1%
2200pF
2200pF
Figure 20. 2.5V/5A, 1.2V/5A Core-I/O Converter with Dual Inputs
0.1µF
0.1µF
2.2Ω
0.047µF
0.1µF
PLLIN
750kHz
1µF
100pF
100pF
D3
0.1µF
D3
0.1µF
TG1
BOOST1
SW1
BG1
MODE/PLLIN
I
SENSE1
SENSE1
RUN1
V
I
V
TG1
BOOST1
SW1
BG1
MODE/PLLIN
I
SENSE1
SENSE1
RUN1
V
I
LIM
TH1
TK/SS1
V
LIM
TH1
TK/SS1
IN
FB1
FB1
IN
1Ω
PGOOD
PGOOD
+
–
+
–
LTC3850
LTC3850
SGND
SGND
EXTV
EXTV
FREQ/PLLFLTR
FREQ/PLLFLTR
CC
CC
SENSE2
SENSE2
SENSE2
SENSE2
BOOST2
TK/SS2
BOOST2
TK/SS2
INTV
INTV
PGND
RUN2
PGND
RUN2
SW2
V
BG2
SW2
TG2
I
V
TG2
BG2
I
TH2
FB2
TH2
FB2
CC
CC
+
–
0.1µF
+
–
0.1µF
D4
D4
1nF
10k
1%
3.16k
1%
0.1µF
0.1µF
10k
1%
10nF
LTC3850/LTC3850-1
13.0k
10k
0.1µF
6.04k
1%
2200pF
0.047µF
14k
1%
2200pF
4.32k
1%
4.99k
1%
M2
M2
100pF
100pF
20k
1%
20k
1%
1.2k
1%
1.2k
1%
0.75µH
4.7µF
6.3V
2x
100pF
0.75µH
100pF
10k
4.7µF
2x
1%
10k
1%
L2
L2
38501 F19
38501 F20
V
3.3V
5V ± 0.5V
IN2
33
C
100µF
X2
C
100µF
X2
V
1.2V
5A
OUT2
V
1.2V
5A
OUT2
OUT2
OUT2
38501fc