LTC3838EUHF-2 [Linear]
High Current, Dual Output Synchronous Buck Converter;
| 型号： | LTC3838EUHF-2 |
| 厂家： | 
Linear |
| 描述： | High Current, Dual Output Synchronous Buck Converter |
| 文件： | 总12页 (文件大小：2229K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DEMO MANUAL
DC1997A-A/DC1997A-B
LTC3838EUHF-1/
LTC3838EUHF-2
High Current, Dual Output
Synchronous Buck Converter
DESCRIPTION
Demonstration circuits DC1997A-A/DC1997A-B are
dual output synchronous buck converters featuring the
LTC®3838EUHF-1/LTC3838EUHF-2. Both assemblies
provide two outputs of 1.5V/20A and 1.2V/20A over an
inputvoltagerangeof4.5Vto14Vataswitchingfrequency
of 300kHz.
The entire converter, excluding the bulk input and output
2
capacitors, fits within a 1.5in area on the board. The high
density is a result of the compact, 2-sided drop-in layout
and the use of dual channel FETs.
Additional features of this demo board include:
•ꢀ Remote sensing for each output.
Applications requiring the output to be adjusted with an
externalreferencecanbeimplementedwiththeDC1997A-B
assembly.Suchapplicationsincludeadaptivevoltagescal-
ing optimization (AVSO) where the processor voltage is
adjustedtoachieveoptimalefficiency,wideoutputvoltage
applications controlled by a DAC, or margining. The 2nd
channel of the DC1997A-B assembly is regulated to an
onboard 1.2V reference in the default setup. The same
referencecanbesetfrom0.8Vto1.5Vwithapotentiometer
or the 2nd channel can regulate to a source external to the
board. The 1st channel on the DC1997A-B assembly and
both channels on the DC1997A-A version are regulated
to the internal reference.
•ꢀ PLLIN and CLKOUT pins.
•ꢀ PGOOD, RUN and TRK/SS pins for each output.
•ꢀ Optional resistors to tie the two outputs together.
•ꢀ Optional footprint for discrete single channel FETs for
higher output current.
•ꢀ OptionalfootprintstoimplementDTR(detecttransient)
to reduce overshoot following a load release.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
PERFORMANCE SUMMARY Specifications are at TA = 25°C, No Airflow
PARAMETER
CONDITION
VALUE
Minimum Input Voltage
Maximum Input Voltage
4.5V
14V
Output Voltage V
Output Voltage V
I
I
= 0A to 20A, V = 4.5V to 14V
1.5V 2ꢀ
1.2V 2ꢀ
20A
OUT1
OUT2
OUT1
OUT2
IN
= 0A to 20A, V = 4.5V to 14V
IN
V
V
Maximum Output Current, I
Maximum Output Current, I
V
V
= 4.5V to 14V, V
= 4.5V to 14V, V
= 1.5V
= 1.2V
OUT1
OUT2
OUT1
IN
IN
OUT1
OUT2
20A
OUT2
Nominal Switching Frequency
300kHz
90.4ꢀ Typical
88.8ꢀ Typical
Efficiency (Measured on DC1997A-B Assembly)
See Figure 2
V
V
= 1.5V, I
= 1.2V, I
= 20A, V = 12V
IN
OUT1
OUT1
= 20A, V = 12V
OUT2
OUT2
IN
dc1997a-af
1
DEMO MANUAL
DC1997A-A/DC1997A-B
QUICK START PROCEDURE
Demonstration circuit DC1997A-A/DC1997A-B is easy to
setuptoevaluatetheperformanceoftheLTC3838EUHF-1/
LTC3838EUHF-2. Please refer to Figure 1 for proper mea-
surementequipmentsetupandfollowtheprocedurebelow.
Adjusting the Onboard Reference:
1. Remove power from the input of the board.
2. Place these jumpers in the following positions:
JP5
JP6
ON BD REF
REF
ADJ
ON BD
1. With power off, connect the input supply, load and
meters as shown in Figure 1. Preset the load to 0A
and VIN supply to be 0V. For both assemblies, place
the jumpers in the following positions:
3. Apply power to the input of the board.
4. Adjust reference with potentiometer at R52.
Connecting a Reference External to the Board:
1. Remove power from the input of the board.
2. Place JP6 in the EXT position.
JP4
JP1
JP2
RUN1
RUN2
MODE
ON
ON
FCM
TheDC1997A-Bassemblyhasadditionaljumpersforthe
reference circuit. Place these jumpers in the following
positions:
3. Connect the external reference between the EXTREF2+
and EXTREF2- turrets.
JP5
JP6
ON BD REF
REF
FIXED
ON BD
4. Apply power to the input of the board.
5. Turn-on the external reference.
2. Adjust the input voltage to be between 4.5V and 14V.
Note3:ForaccurateefficiencymeasurementsinDCMat
V
V
should be 1.5V 2ꢀ.
should be 1.2V 2ꢀ.
OUT1
light load at V greater than 5V, remove R51 and apply
IN
OUT2
an external reference to the board as mentioned above.
3. Next, apply 20A load to each output and re-measure
Single Output/Dual Phase Operation
V
.
OUT
A single output/dual phase converter may be preferred
for higher output current applications. The optional com-
ponents required to tie the phases together are found on
the top middle of the first sheet. To tie the two outputs
together, make the following modifications:
4. OncetheDCregulationisconfirmed,observetheoutput
voltage ripple, load step response, efficiency and other
parameters.
Note 1: Use the BNC connectors labeled V
to measure the output volt-age ripple.
or V
OUT2
OUT1
1. TiethetwoVOUTshapestogetherwithapieceofcopper
at the edge of the board where the copper is exposed.
Note 2: Do not connect load from the VO1_SNS+ turret
to the VO1_SNS- turret or from the VO2_SNS+ turret to
the VO2_SNS- turret. This could damage the converter.
Only apply load across the stud connectors on the edge
of the board.
2. Tie the VOUT SENSE1+ pin to INTVCC with a 0Ω jumper
at R8. This will tie ITH1 to ITH2 inside the chip.
3. Tie RUN1 to RUN2 by stuffing a 0Ω jumper at R15.
4. If DTR is implemented, then stuff 0Ω jumper at R9 to
tie the two DTR pins together.
Reference Circuit for Channel 2 of DC1997A-B
Assembly
Channel 2 of the DC1997A-B assembly is configured by
default to regulate to the fixed 1.2V reference generated
by the LT®6650 reference circuit. If desired, this reference
canbesetwithapotentiometer,oranexternalsourcesuch
as a DAC or another source. See the following instructions
to set the board for either:
dc1997a-af
2
DEMO MANUAL
DC1997A-A/DC1997A-B
QUICK START PROCEDURE
Dynamic Load Circuit (Optional)
3. Connect the output of the pulse generator to the PULSE
turret for the rail under test and connect the return to
the adjacent GND turret.
Demonstration circuit DC1997A-A/DC1997A-B provides
a simple load-step circuit consisting of a MOSFET and
sense resistor for each rail. To apply a load step, follow
the steps below.
4. With the converter running, slowly increase the am-
plitude of the pulse generator output to provide the
desired load step pulse height. The scaling for the load
step signal is 5mV/Amp.
1. Pre-set the amplitude of a pulse generator to 0.0V and
the duty cycle to 5ꢀ or less.
2. Connect the scope to the VOUT BNC connectors for
the rail under test with a coax cable. To monitor the
load-step current, connect the scope probe across the
ISTEP+/- turrets for that rail.
–
+
V
V
*
OUT2
–
I
IN
V
OUT2
LOAD
A
I
+
OUT2
A
+
–
+
–
V
IN
V
V
IN
SUPPLY
A
I
OUT1
+
OUT1
LOAD
V
–
DC1997A F01
*MONITOR THE OUTPUT VOLTAGE ACROSS
EITHER COUT2 OR COUT7 FOR ACCURATE
EFFECIENCY MEASUREMENTS
V
*
V
OUT1
–
+
Figure 1. Proper Measurement Equipment Setup
dc1997a-af
3
DEMO MANUAL
DC1997A-A/DC1997A-B
QUICK START PROCEDURE
LTC3838-2 1.5V/20A and 1.2V/20A Converter
LTC3838-2 1.5V/20A and 1.2V/20A Converter
95
100
90
FCM, V = 12V, f = 300kHz
FCM AND DCM
IN
SW
V
= 12V
1.5V
1.2V
IN
SW
f
= 300kHz
90
85
80
75
70
80
70
BOTH RAILS:
MOSFET = INFINEON
BSC0911ND (DUAL)
L = WÜRTH 7443330047
0.47µH, DCR = 0.8mΩ 10%
60
50
40
30
20
10
0
R
SENSE
= 1mΩ
BOTH RAILS:
MOSFET = INFINEON BSC0911ND (DUAL)
L = WÜRTH 7443330047
1.5V RAIL FCM
1.2V RAIL FCM
1.5V RAIL DCM
1.2V RAIL DCM
0.47µH, DCR = 0.8mΩ 10%
R
SENSE
= 1mΩ
0
5
10
15
20
25
0.001
0.01
0.1
1
10
100
LOAD CURRENT (A)
DC1997A F03
DC1997A F02
LOAD CURRENT (A)
Figure 2. Efficiency Curves for the 1.5V Rail and 1.2V
Rail of the DC1997A-B Assembly in FCM at VIN = 12V
Figure 3. Efficiency Curves for the 1.5V Rail and 1.2V Rail
of the DC1997A-B Assembly in FCM and DCM at VIN = 12V
VOUT2 of the LTC3838-2 Demo Board
Adjusted with External Reference
95
FCM, V = 12V, f = 300kHz
IN
SW
1.6V
109mV
90
85
80
75
70
1.5VO(AC)
50mV/DIV
1.2V
0.8V
20A
LOAD STEP
5A/DIV
BOTH RAILS:
10A
MOSFET = INFINEON BSC0911ND (DUAL)
L = WÜRTH 7443330047
0.47µH, DCR = 0.8mΩ 10%
DC1997A F05
20µs/DIV
R
= 1mΩ
SENSE
C
= 2× SANYO 2R5TPE330M9, 100µF X5R 1206
OUT
0
5
10
15
20
25
L = WÜRTH 7443330047 (0.47µH)
= 300kHz
f
SW
LOAD CURRENT (A)
DC1997A F04
Figure 4. Efficiency Curves for VOUT2 on the DC1997A-B
Assembly at Different Output Voltage Settings
Figure 5. 50% to 100% to 50% Load Step Response
of the 1.5V Rail on the DC1997A-A Assembly
102mV
109mV
1.2VO(AC)
50mV/DIV
1.5VO(AC)
50mV/DIV
20A
20A
LOAD STEP
LOAD STEP
5A/DIV
5A/DIV
10A
10A
DC1997A F06
DC1997A F07
20µs/DIV
20µs/DIV
C
= 2× SANYO 2R5TPE330M9, 100µF X5R 1206
C
= 2× SANYO 2R5TPE330M9, 100µF X5R 1206
OUT
OUT
L = WÜRTH 7443330047 (0.47µH)
= 300kHz
L = WÜRTH 7443330047 (0.47µH)
f = 300kHz
SW
f
SW
Figure 6. 50% to 100% to 50% Load Step Response
of the 1.2V Rail on the DC1997A-A Assembly
Figure 7. 50% to 100% to 50% Load Step Response
of the 1.5V Rail on the DC1997A-B Assembly
dc1997a-af
4
DEMO MANUAL
DC1997A-A/DC1997A-B
QUICK START PROCEDURE
97mV
1.2VO(AC)
50mV/DIV
RUN1
2V/DIV
20A
LOAD STEP
V
OUT1
5A/DIV
TRACK/SS1
500mV/DIV
10A
DC1997A F09
2ms/DIV
DC1997A F08
20µs/DIV
C
SS
V
IN
= 10nF
= 12V, FULL LOAD
C
= 2× SANYO 2R5TPE330M9, 100µF X5R 1206
OUT
L = WÜRTH 7443330047 (0.47µH)
f
= 300kHz
SW
Figure 8. 50% to 100% to 50% Load Step Response
of the 1.2V Rail on the DC1997A-B Assembly
Figure 9. Turn-On of the 1.5V Rail of the DC1997A-A
Assembly. RUN Pin Released from Ground
RUN2
2V/DIV
RUN1
2V/DIV
V
V
OUT1
TRACK/SS1
500mV/DIV
OUT2
TRACK/SS2
500mV/DIV
DC1997A F10
DC1997A F11
2ms/DIV
2ms/DIV
C
SS
V
IN
= 10nF
= 12V, FULL LOAD
C
SS
V
IN
= 10nF
= 12V, FULL LOAD
Figure 10. Turn-On of the 1.2V Rail of the DC1997A-A
Assembly. RUN Pin Released from Ground
Figure 11. Turn-On of the 1.5V Rail of the DC1997A-B
Assembly. RUN Pin Released from Ground
RUN2
2V/DIV
EXTV
REF
500mV/DIV
V
OUT2
TRACK/SS2
500mV/DIV
DC1997A F12
2ms/DIV
C
SS
V
IN
= 4.7nF
= 12V, FULL LOAD
Figure 12. Turn-On of the 1.2V Rail of the DC1997A-B
Assembly. RUN Pin Released from Ground
dc1997a-af
5
DEMO MANUAL
DC1997A-A/DC1997A-B
PARTS LIST–DC1997A-A
ITEM
QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
2
1
2
2
3
2
1
2
1
2
4
1
4
4
2
2
2
2
6
1
2
1
2
12
C12
CAP X7R 470pF 16V 5ꢀ 0603
CAP X5R 10µF 16V,10ꢀ 0805
CAP NPO 1000pF 25V 5ꢀ 0603
CAP X5R 0.1µF 16V 10ꢀ 0603
CAP NPO 47pF 16V 5ꢀ 0603
CAP X7R 330pF 16V 0603
CAP X5R 0.01µF 16V 10ꢀ 0603
CAP X5R 4.7µF 16V,10ꢀ 0805
CAP X5R 1µF 16V,10ꢀ 0603
CAP X5R 22µF 16V 1210
CAP 180µF 16V SVP-F8
AVX 0603YC471JAT2A
C21, C22
MURATA GRM21BR61C106KE15L
AVX 06033A102JAT2A
3
C3, C16
4
C4, C10, C14
AVX 0603YD104KAT2A
5
C5, C11
AVX,0603YA470JAT2A
6
C6
AVX 0603YC331JAT2A
7
C7, C13
AVX 0603YD103KAT2A
8
C8
AVX 0805YD475KAT2A
9
C9, C18
AVX 0603YD105KAT2A
10
11
12
13
14
15
16
17
18
19
20
21
22
23
CIN1, CIN2, CIN3, CIN4
AVX 1210YD226MAT2A
CIN6
SANYO 16SVP180MX
COUT1, COUT2, COUT6, COUT7
CAP X5R 100µF 6.3V 20ꢀ 1206
CAP 330µF 2.5V SIZE 7343
DIODE SCHOTTKY SOD-323
IND 0.47µH 0.8mΩ DCR
MOSFET 5mm x 6mm POWER STAGE
RES 100k 1ꢀ 0603
MURATA GRM31CR60J107ME39L
SANYO 2R5TPE330M9
COUT4, COUT5, COUT9, COUT10
D1, D2
CENTRAL SEMI. CMDSH-4E TR
WÜRTH 7443330047
L1, L2
Q1, Q2
INFINEON BSC0911ND
R13, R45
VISHAY CRCW0603100KFKEA
VISHAY CRCW060310K0FKEA
VISHAY CRCW060311K0FKEA
VISHAY CRCW06032R20FKEA
VISHAY CRCW0603133KFKEA
VISHAY CRCW060315K0FKEA
VISHAY CRCW06030000Z0EA
R2, R11, R19, R44, R4, R12
RES 10k 1ꢀ 0603
R27
RES CHIP 11k 1ꢀ 0603
R29, R31
R30
RES 2.2Ω 1ꢀ 0603
RES 133k 1ꢀ 0603
R32, R40
RES 15k 1ꢀ 0603
R5, R17, R21, R23, R25, R35, R38, R41, RES 0Ω,0603
R42, R50, R14, R24
24
25
26
4
2
1
R6, R7, R46, R48
RS1, RS2
U1
RES 10Ω 1ꢀ 0603
VISHAY CRCW060310R0FKED
VISHAY WSL25121L000FEA
LINEAR TECH. LTC3838EUHF-1
RES 0.001Ω 1W 1ꢀ 2512
LTC3838EUHF-1 QFN 38-LEAD
dc1997a-af
6
DEMO MANUAL
DC1997A-A/DC1997A-B
PARTS LIST–DC1997A-A
ITEM
QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Additional Circuit Components
1
2
0
0
0
0
0
0
0
0
2
0
0
C1, C2, C15, C17, C19, C23, C24
CAP 0603
OPT
OPT
OPT
OPT
OPT
OPT
OPT
C20
CAP 0805
3
CIN5
CAP SVP-F8
4
CIN7-CIN12
CAP OPT 1210
CAP OPT 7343
DIODE SOD-323
TESTPOINT TURRET 0.095"
5
COUT3, COUT8, COUT11-COUT14
6
D3
7
E19, E20
JP5, JP6
Q11, Q12
Q3-Q10
8
HEADER OPT 2MM SINGLE 3-PIN
MOSFET N-CH 30V TO-252
MOSFET LFPAK
OPT
9
FAIRCHILD FDD8874
10
11
OPT
OPT
R1, R3, R8, R9, R10, R15, R16, R18,
R20, R22, R26, R28, R33, R34, R36,
R37, R39, R43, R47, R49, R63
RES 0603
12
0
0
2
2
0
R51, R53, R54, R59, R60, R61, R62
RES 0603
OPT
13
R52
RES POT-3313J-1
RES 10k 1ꢀ 0603
RES 0.005Ω 1/2W 1ꢀ 2010
LT6650HS5 SOT23-5
OPT
14
R55, R56
R57, R58
U2
VISHAY CRCW060310K0FKEA
VISHAY WSL20105L000FEA
OPT
15
16
Hardware
1
2
3
4
5
6
7
8
6
12
6
J1-J6
STUD TEST PIN
PEM KFH-032-10
ANY
J1-J6
NUT BRASS #10-32
RING LUG #10
J1-J6
KEYSTONE 8205
ANY
6
J1-J6
WASHER TIN PLATED BRASS
CONN BNC 5 PINS
2
J7,J8
CONNEX 112404
SAMTEC TMM-103-02-L-S
SAMTEC TMM-104-02-L-S
SAMTEC 2SN-BK-G
2
JP1, JP4
JP2, JP3
XJP1-XJP4
HEADER 2MM SINGLE 3-PIN
HEADER 2MM SINGLE 4-PIN
SHUNT
2
4
dc1997a-af
7
DEMO MANUAL
DC1997A-A/DC1997A-B
PARTS LIST–DC1997A-B
ITEM QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
2
1
2
2
3
2
1
1
1
1
2
4
1
4
4
2
2
2
3
4
1
2
1
2
13
C12
CAP X7R 470pF 16V 5ꢀ 0603
CAP X5R 10µF 16V 10ꢀ 0805
CAP NPO 1000pF 25V 5ꢀ 0603
CAP X5R 0.1µF 16V 10ꢀ 0603
CAP NPO 47pF 16V 5ꢀ 0603
CAP NPO 680pF 16V 0603
CAP X5R 0.01µF 16V 10ꢀ 0603
CAP X7R 4.7nF 10V 0603
CAP X5R 4.7µF 16V,10ꢀ 0805
CAP X5R 1µF 16V,10ꢀ 0603
CAP X5R 22µF 16V 1210
CAP 180µF 16V SVP-F8
AVX 0603YC471JAT2A
C21, C22
MURATA GRM21BR61C106KE15L
AVX 06033A102JAT2A
3
C3, C16
4
C4, C10, C14
AVX 0603YD104KAT2A
5
C5, C11
AVX,0603YA470JAT2A
6
C6
AVX 0603YC681JAT2A
7
C13
AVX 0603YD103KAT2A
8
C7
AVX 0603ZC472JAT2A
9
C8
AVX 0805YD475KAT2A
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
C9, C18
AVX 0603YD105KAT2A
CIN1, CIN2, CIN3, CIN4
AVX 1210YD226MAT2A
CIN6
SANYO 16SVP180MX
COUT1, COUT2, COUT6, COUT7
CAP X5R 100µF 6.3V 20ꢀ 1206
CAP 330µF 2.5V SIZE 7343
DIODE SCHOTTKY SOD-323
IND 0.47µH 0.8mΩ DCR
MOSFET 5mm x 6mm POWER STAGE
RES 100k 1ꢀ 0603
MURATA GRM31CR60J107ME39L
SANYO 2R5TPE330M9
COUT4, COUT5, COUT9, COUT10
D1, D2
CENTRAL SEMI. CMDSH-4E TR
WÜRTH 7443330047
L1, L2
Q1, Q2
INFINEON BSC0911ND
R13, R24, R45
R2, R11, R19, R44
R27
VISHAY CRCW0603100KFKEA
VISHAY CRCW060310K0FKEA
VISHAY CRCW06035K23FKEA
VISHAY CRCW06032R20FKEA
VISHAY CRCW0603133KFKEA
VISHAY CRCW060315K0FKEA
VISHAY CRCW06030000Z0EA
RES 10k 1ꢀ 0603
RES CHIP 5.23k 1ꢀ 0603
RES 2.2Ω 1ꢀ 0603
R29, R31
R30
RES 133k 1ꢀ 0603
R32, R40
RES 15k 1ꢀ 0603
R5, R17, R21, R23, R25, R35, R38, R41, RES 0Ω, 0603
R42, R50, R59, R61, R62
25
26
27
4
2
1
R6, R7, R46, R48
RS1, RS2
U1
RES 10Ω 1ꢀ 0603
VISHAY CRCW060310R0FKED
VISHAY WSL25121L000FEA
LINEAR TECH. LTC3838EUHF-2
RES 0.001Ω 1W 1ꢀ 2512
LTC3838EUHF-2 QFN 38-LEAD
dc1997a-af
8
DEMO MANUAL
DC1997A-A/DC1997A-B
PARTS LIST–DC1997A-B
ITEM QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Additional Circuit Components
1
2
0
1
1
1
1
0
0
0
1
2
0
0
C1, C2, C15, C17
CAP 0603
OPT
C19
CAP X5R 1µF 16V 0603
CAP X5R 4.7µF 16V 0805
CAP X5R 1µF 16V 0603
CAP X5R 0.01µF 16V 0603
CAP SVP-F8
AVX 0603YD105KAT2A
AVX 0805YD475KAT2A
AVX 0603YD105KAT2A
AVX 0603YD103KAT2A
OPT
3
C20
4
C23
5
C24
6
CIN5
7
CIN7-CIN12
CAP OPT 1210
OPT
8
COUT3, COUT8, COUT11-COUT14
CAP OPT 7343
OPT
9
D3
DIODE BZT52C5V6S 5.6V ZENER SOD-323
MOSFET N-CH 30V TO-252
MOSFET LFPAK
DIODES BZT52C5V6S-7-F
10
11
12
Q11, Q12
Q3-Q10 (OPT)
FAIRCHILD FDD8874
OPT
OPT
R1, R3, R8, R9, R10, R15, R16, R18,
R20, R22, R26, R28, R33, R34, R36,
R37, R39, R43, R47, R49, R63
RES 0603
13
0
1
1
1
1
2
2
1
1
R4, R12, R14
R51
RES 0603
OPT
14
RES CHIP 10k 1ꢀ 0603
RES POT 20k 1ꢀ POT-3313J-1
RES 20k 0.1ꢀ 0603
VISHAY CRCW060310K0FKEA
BOURN 3313J-1-203E
15
R52
16
R53
VISHAY PTN0603E2002BST1
VISHAY PTN0603E1002BSTS
VISHAY CRCW060310K0FKEA
VISHAY WSL20105L000FEA
VISHAY PTN0603E6651BSTS
LINEAR TECH. LT6650HS5
17
R54
RES 10k 0.1ꢀ 0603
18
R55, R56
R57, R58
R60
RES 10k 1ꢀ 0603
19
RES 0.005Ω 1/2W 1ꢀ 2010
RES CHIP 6.65k 0.1ꢀ 0603
LT6650HS5 SOT23-5
20
21
U2
Hardware
1
2
2
26
6
E19, E20
E1-E7, E9, E11-E28
J1-J6
TESTPOINT TURRET 0.095"
TESTPOINT TURRET 0.095"
STUD TEST PIN
MILL-MAX 2501-2-00-80-00-00-07-0
MILL-MAX 2501-2-00-80-00-00-07-0
PEM KFH-032-10
3
4
6
J1-J6
NUT BRASS #10-32
RING LUG #10
ANY
5
6
J1-J6
KEYSTONE 8205
6
12
2
J1-J6
WASHER TIN PLATED BRASS
CONN BNC 5 PINS
ANY
7
J7, J8
CONNEX 112404
8
2
JP1, JP4
JP2, JP3
JP5, JP6
XJP1-XJP4
XJP5,XJP6
HEADER 2MM SINGLE 3-PIN
HEADER 2MM SINGLE 4-PIN
HEADER 2MM SINGLE 3-PIN
SHUNT
SAMTEC TMM-103-02-L-S
SAMTEC TMM-104-02-L-S
SAMTEC TMM-103-02-L-S
SAMTEC 2SN-BK-G
SAMTEC 2SN-BK-G
9
2
10
11
12
2
1
1
SHUNT
dc1997a-af
9
DEMO MANUAL
DC1997A-A/DC1997A-B
SCHEMATIC DIAGRAM
dc1997a-af
10
DEMO MANUAL
DC1997A-A/DC1997A-B
SCHEMATIC DIAGRAM
dc1997a-af
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
DEMO MANUAL
DC1997A-A/DC1997A-B
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
Thisdemonstrationboard(DEMOBOARD)kitbeingsoldorprovidedbyLinearTechnologyisintendedforuseforENGINEERINGDEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
dc1997a-af
LT 0113 • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
12
●
●
LINEAR TECHNOLOGY CORPORATION 2012
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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