• Easy to use board for evaluation of the LDO in a target
application.
• Exposed soldering pads/pins for monitoring VIN, VO1,
VO2, POR1, POR2, and CBYP.
• Voltage monitoring using test pins, banana jacks and
scope jacks.
• Enable jumpers for each supply, plus jumpered enable pull
down resistors.
• The board has options for:
- Changing the CPOR capacitor
- Using a logic analyser/pattern generator to monitor
enable/POR response.
AN1210 Rev 0.00
Oct 5, 2005
Page 1 of 5
ISL9000EV2
What is Inside
The Evaluation Kit contains:
• ISL9000__EV2 Evaluation board
• The ISL9000 Data Sheet
• The ISL9000EV2 Users Guide (this document)
What is Needed
The following instruments will be needed to perform testing
(not provided):
• DC 6.5V/1A Power supply
• Two Digital Voltmeters (4.5 digit or better).
• Oscilloscope
• 2 channel, 0 to 400mA electronic load
• Cables and wires
Step 4: Connect two voltmeter positive leads to the VO1
“kelvin” connector (J13-1, “V1K”) and the VO2 “kelvin”
connector (J13-5, “V2K”). The meters can also be
connected to the VO power pins J2-2 and J2-4 or the
banana jacks, but at higher currents, these won’t reflect
the output voltage as accurately as the kelvin
connections.
Connect the negative leads to GND J13-3. (To get the
best representation of the IC output voltage under all
output loading conditions, add a ground terminal to the
GNDk pad and connect the meter ground leads there).
Step 5: Connect a third voltmeter to the input. This can be
connected to the J2 terminal, but at higher inputs, the
VIk terminal will give the most accurate reading of the
voltage at the ISL9000 VIN pin.
Step 6: (Optional) Connect an electronic load to one or both of
the outputs. For the VO1 output, use the VO1 power
connector J2-2 (“V1P”). For the VO2 output, use the
VO2 power connector J2-4 (“V2P”).
Step 7: Monitor VO1and VO2. The voltages should reflect the
voltage of the selected part, i.e. the ISL9000NJ EV2
board should have 3.3V and 2.8V outputs. For a
complete list of output voltages, see Table 1.
Step 8: Change the loading on each output and monitor the
output voltages
Quick Setup Guide
Step 1: Place shunts on J3 between “EN1” and HI”, on J4
between “EN1” and HI”, and on J10 (CPOR). This is the
factory default connection.
Step 2: Set the power supply to 3.8V with a 1.0A current limit
(then turn off).
Step 3: Connect the power supply between VIN and GND
using connector J2.
GND
Meter 3
+
Evaluation board option ID
Scope Probe Jacks
(not populated)
Banana Jacks
(not populated)
Power
Supply
Meter 1
+
E-load
Ch1 load
GND
Ch2 load
Input
Power
0-5V/1.0A
+
Meter 2
Daughter Card Connector
(not populated)
Logic Analyser connector
(not populated)
POR jumper: On for proper POR2 delay.
EN1 - Jumper on EN1 HI to enable LDO-1 output
EN2 - Jumper on EN2 HI to enable LDO-2 output
Add jumpers to add optional 100k EN pull down resistors.
FIGURE 1. BOARD CONNECTION DIAGRAM
AN1210 Rev 0.00
Oct 5, 2005
Page 2 of 5
ISL9000EV2
Step 9: Change the input voltage and monitor the effect on the
output voltages
For additional testing, such as load transient and line transient
response, adding the optional scope jacks will improve the
measurement, by reducing external noise. The Scope Jack
part number is included in the bill of materials as an optional
component.
If desired, banana jacks can be added to the board to facilitate
connection of the board to test equipment. Part numbers for
these optional components are included in the bill of materials.
Improved PSRR and noise specs can be obtained by replacing
the 0.01F (C3) capacitor with a 0.1F capacitor.
PART NUMBER
ISL9000NJEV2
ISL9000NFEV2
ISL9000KKEV2
ISL9000KJEV2
ISL9000KFEV2
ISL9000JBEV2
ISL9000FJEV2
ISL9000KCEV2
ISL9000BJEV2
ISL9000PLEV2
ISL9000GCEV2
ISL9000JCEV2
ISL9000JREV2
ISL9000JMEV2
ISL9000LLEV2
ISL9000MMEV2
TABLE 1. OUTPUT VOLTAGES
OUTPUT VOLTAGE 1
MIN
3.267
3.267
2.821
2.821
2.821
2.772
2.475
2.821
1.485
1.831
2.673
2.772
2.772
2.772
2.871
2.970
MAX
3.333
3.333
2.879
2.879
2.879
2.828
2.525
2.879
1.515
1.869
2.727
2.828
2.828
2.828
2.929
3.030
OUTPUT VOLTAGE 2
MIN
2.772
2.475
2.821
2.772
2.475
1.485
2.772
1.782
2.772
2.871
1.782
1.782
2.574
2.970
2.871
2.970
MAX
2.828
2.525
2.879
2.828
2.525
1.515
2.828
1.818
2.828
2.929
1.818
1.818
2.626
3.030
2.929
3.030
Schematic
JP1
HEADER 8X2
1
CON1
1
3
5
7
9
11
13
15
J16
2
4
6
8
10
12
14
16
J11
SCOPE JACK
B2
J13
CON5
U1
B1
1
2
3
4
5
J4
JMP4
J2
2
1
CON2
R1
100K
R2
100K
GND
C2
1uF
C3
0.01uF
C1
100uF
JMP4
VIN
EN1
EN2
CBYP
CPOR
ISL9000
VO1
VO2
POR2
POR1
GND
10
9
8
7
6
J3
1
2
3
4
5
C5
1uF
C6
1uF
B3
J12
SCOPE JACK
B5
1
J5
CON1
J1
J9
JMP2
J10
JMP2
C4
1
CON1
J7
1
VO1 - Kelvin
VO1 - Power
GND
VO2 - Power
VO2 - Kelvin
B4
0.01uF CON1
1
2
3
4
5
6
1
1
J14
CON6
J6 J15 J8
CON1
CON1
CON1
FIGURE 2. ISL9000EV2 REV B SCHEMATIC
AN1210 Rev 0.00
Oct 5, 2005
1
Page 3 of 5
ISL9000EV2
Bill of Materials
ITEM
QTY
PART TYPE
DESIGNATOR
MFR
DIGIKEY
COMMENTS
COMPONENTS COMMON TO ALL BOARDS
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
1
2
2
1
4
3
1
1
1
2
3
PCB
0.01µF
1µF
1µF
100K
100µF
CON1
CON1
CON2
CON5
JMP2
JMP4
Shunt
PCB
C3, C4
C2
C5, C6
R1, R2
C1
J1, J5, J7, J16
J6, J8, J15
J2
J13
J10
J3, J4
ISL9000EV2 REVB
AVX: 06035C103KAT2A
Panasonic: ECJ-2FB1C105K
Panasonic: ECJ-3YB1E105K
Panasonic: ERJ-3EKF-100KV
KEMET: T491D107M016AS
Keystone: 5010
Keystone: 5016
Molex: 22-23-2021
Molex: 22-23-2051
Molex: 22-28-4020
Molex: 22-28-4040
AMP: 382811-8
478-1227-2-ND
PCC2249CT-ND
PCC1893CT-ND
P100KHCT-ND
Digikey: 399-1605-1-ND
Digikey: 5010K-ND
Digikey: 5016KCT-ND
Digikey: WM4200-ND
Digikey: WM4203-ND
Digikey: WM6402-ND
Digikey: WM6404-ND
Digikey: A26228-ND
Installed at test - ship 10
to a strip, but only 3
needed/board
0603 capacitor
0805 capacitor
1206 or 1210 capacitor
Any 0805 resistor
COMPONENTS SPECIFIC TO EACH BOARD VARIATION
14
15
1
1
ISL9000
Label
U1
L1
Intersil: ISL9000IR_ _Z
_ _Label
*
ISL9000_
_EV2
REVB
only
ISL9000_
_EV2
REVB
only
COMPONENTS OPTIONAL ON EACH BOARD
16
17
18
19
20
21
2
3
2
1
1
1
SCOPE JACK
BANANA
BANANA
JMP2
CON6
HEADER 8X2
J11, J12
B1, B2, B3
B4, B5
J9
J14
JP1
Tektronix #131-5031-00
Keystone: 7006
Keystone: 7007
Molex: 22-28-4020
HRS: DF11-6DS-2DSA
Molex: 10-88-1161
*
7006K-ND
7007K-ND
Digikey: WM6402-ND
Digikey: H2274
Digikey: WM6916-ND
Not populated
Not populated
Not populated
Not populated
Not populated
Not populated
AN1210 Rev 0.00
Oct 5, 2005
Page 4 of 5
Notice
1.
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