Quick Start Procedure; Parts List - Linear Technology LT3512 Demo Manual

DEMO MANUAL DC1803A

QUICK START PROCEDURE

Demonstration circuit 1803A is easy to set up to evalu-
ate the performance of the LT3512. Refer to Figure 2 for
proper measurement equipment setup and to follow the
procedure below:
Note: When measuring the input or output voltage ripple, care must be
taken to avoid a long ground lead on the oscilloscope probe. Measure the
input or output voltage ripple by touching the probe tip directly across the
+ –
V and GND or V and V
IN OUT OUT
–
Note: Make sure GND and V
OUT
such as by two oscilloscope probes.
1. With power off, connect the input power supply to V
and GND.

PARTS LIST

ITEM QTY REFERENCE
Required Circuit Components
1 1 C2
2 1 C3
3 1 C5
4 1 C9
5 1 C10
6 1 D1
7 1 D2
8 1 D4
9 1 D5
10 1 R3
11 1 R4
2
terminals.
are not connected together accidently,
Figure 2. Proper Measurement Equipment Setup
PART DESCRIPTION
CAP ., X7R, 1μF 100V, 10%, 1206
CAP ., X5R, 47μF 10V, 10%, 1210
CAP ., ELECT., 10μF 100V
CAP ., X7R, 4.7μF 16V, 10%, 0805
CAP ., X7R, 3300pF , 50V, 0402
DIODE, SCHOTTKY, SOD-123
DIODE, SOD-123
ZENER DIODE, SOD-123
ZENER DIODE, SOD-123
RES., CHIP , 806k, 1%, 0805
RES., CHIP , 169k, 1%, 0603
2. Connect a load of 500mA or less to V
terminals (not GND).
3. Turn on the power at the input.
4. Check for the proper output voltage (5V).
Note: If there is no output, temporarily disconnect the load to make
sure that the load is not set too high.
5. Once the proper output voltage is established, adjust the
load and input within the operating ranges and observe
the output voltage regulation, ripple voltage, effi ciency
and other parameters.
IN
+
and V
OUT
MANUFACTURER/PART NUMBER
MURATA, GRM31CR72A105KA01L
MURATA, GRM32ER61A476KE20L
SUN ELEC., 100CE10BS
TAIYO YUDEN, EMK212B7475KG
AVX, 04025C332KAT2A
DIODES INC SBR1A40S3
DIODES INC. BAV21W-7-F
ON SEMI., MMSZ5266BT1G
CENTRAL SEMI., CMHZ5236B TR
VISHAY, CRCW0805806KFKEA
VISHAY, CRCW0603169KFKEA
–
OUT
dc1803af