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DC1864A

P1-P3P4-P6P7-P8
4
dc1864af
DEMO MANUAL DC1864A
QUICK START PROCEDURE
OUTPUT VOLTAGE
50mV/DIV AC
OUTPUT CURRENT
500mA/DIV
V
IN
= 12V, V
OUT
= 1.2V
500mA LOAD STEP (500mA TO 1A)
PULSE-SKIPPING MODE
f
SW
= 1MHz
OUTPUT VOLTAGE
50mV/DIV AC
OUTPUT CURRENT
500mA/DIV
V
IN
= 12V, V
OUT
= 2.5V
500mA LOAD STEP (500mA TO 1A)
PULSE-SKIPPING MODE
f
SW
= 1MHz
OUTPUT VOLTAGE
50mV/DIV AC
OUTPUT CURRENT
500mA/DIV
V
IN
= 12V, V
OUT
= 3.3V
500mA LOAD STEP (500mA TO 1A)
PULSE-SKIPPING MODE
f
SW
= 1MHz
Figure 3. Load Step Response
Figure 4. Load Step Response
Figure 5. Load Step Response
5
dc1864af
DEMO MANUAL DC1864A
QUICK START PROCEDURE
LOAD CURRENT (A)
0.0001
75
80
90
0.1
70
65
0.001 0.01 1
60
55
85
EFFICIENCY (%)
V
O
= 5V
V
O
= 3.3V
V
O
= 2.5V
V
O
= 1.8V
V
O
= 1.2V
V
IN
= 12V, Burst Mode OPERATION
f
SW
= 2.25MHz
L = 2.2µH, Coilcraft XFL-3012
Figure 6. Load Step Response
Figure 7. Circuit Efficiency
OUTPUT VOLTAGE
100mV/DIV AC
OUTPUT CURRENT
500mA/DIV
V
IN
= 12V, V
OUT
= 5V
500mA LOAD STEP (500mA TO 1A)
PULSE-SKIPPING MODE
f
SW
= 1MHz
6
dc1864af
DEMO MANUAL DC1864A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 CFF CAP., X7R, 22pF, 50V, 0402 AVX 04025A220KAT
2 1 C1 CAP., X5R, 10µF, 25V, 10%, 1206 AVX 12063D106KAT
3 2 C2, C3 CAP., X5R, 22µF, 25V, 10%, 1206 AVX 12063D226KAT
4 1 C4 CAP., X5R, 1µF, 6.3V,20%, 0402 TDK, C1005X5R0J105M
5 1 L1 IND, FIXED INDUCTOR, 2.2µH COILCRAFT., XFL3012-222MEB
6 2 R3, R
SET
RES., CHIP, 619k, 1%, 0402 VISHAY CRCW0402619KFKED
7 1 U1 LTC3621EDCB-2, 6-LEAD DFN PACKAGE LINEAR TECH., LTC3621EDCB-2#PBF
Additional Demo Board Circuit Components
1 1 C1A CAP., X5R, 8.2µF 20V, SIZE B2, 3528-7343 SANYO, 20TQC8R2M
2 0 R1, R2 OPT RES., CHIP, 0402
3 1 R4 RES., CHIP, 309k, 1%, 0402 VISHAY CRCW0402309KFKED
4 1 R5 RES., CHIP, 196k, 1%, 0402 VISHAY CRCW0402196KFKED
5 1 R6 RES., CHIP, 137k, 1%, 0402 VISHAY CRCW0402137KFKED
6 1 R7 RES., CHIP, 84.5k, 1%, 0402 VISHAY CRCW040284K5FKED
7 0 R8 OPT RES., CHIP, 0402
Hardware
1 8 E1-E8 TESTPOINT, TURRET, 0.095" MILL-MAX, 2501-2-00-80-00-00-07-0
2 2 JP1, JP2 2MM SINGLE ROW HEADER, 3-PIN SULLINS, NRPN031PAEN-RC
3 6 JP3-JP8 2MM SINGLE ROW HEADER, 2-PIN SULLINS, NRPN021PAEN-RC
4 3 JP1-JP3 SHUNT, SAMTEC, 2SN-BK-G
P1-P3P4-P6P7-P8

DC1864A

Mfr. #:
Buy DC1864A
Manufacturer:
Analog Devices Inc.
Description:
Power Management IC Development Tools LTC3621-2 Demo Board - 2.7V to 17V Input
Lifecycle:
New from this manufacturer.
Delivery:
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