ISL6505CB-T Intersil, ISL6505CB-T Datasheet - Page 15

• Manufacturer Part Number: ISL6505CB-T
• Description: IC MULTIPLE POWER CTRLR 20-SOIC
• Manufacturer: Intersil

Specifications of ISL6505CB-T

• Applications: Power Supply Controller/Monitor
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 6mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Input: -

Resistors R20, R21
These two act as a resistor divider off the V
common connection is brought into the FB1 pin. Use the
following equation to determine them:
V
V
the undervoltage detection for this output will be typically
80% of whatever the output voltage is set at.
The sum of (R20 + R21) should equal approximately 1.2 to
1.5k
too low (resistors are too high in value), there might be a
small offset error due to the input current of the FB1 pin. On
the other extreme, the current can go as high as 10mA, in
order to meet the minimum load current requirement.
V
V
V
V
NOTE: Outputs may also require small (1µF) high frequency
capacitors.
OUT1
OUT2
OUT3
OUT4
OUT1
OUT1
SHUTDOWN
Ω,
= 1.2V to1.5V: Q6 = FDD6530A, C
= 1.2V: internal FET, C
= 3.3V: Q2 = 2SD1802, Q3 = FDT459N, C
= 5.0V: Q4 = FDV340P, Q5 = FDT459N, C
in order to draw about 1mA of current. If the current is
= 0.8V * (R20 + R21)/R21.
is expected to be between 1.2V and 1.5V. Note that
SLP_S3
SLP_S5
3.3V
FAULT
1.2V - 1.5V
+3.3V
+12V
+5V
V
+5V
DUAL
OUT1
V
OUT3
SB
IN
IN
IN
/3.3V
SB
Q2
C
OUT1
OUT2
15
= 10µF
C
OUT3
OUT1
FIGURE 13. TYPICAL ISL6505 APPLICATION DIAGRAM
R
Q3
DLA
= 1000µF
OUT1
OUT4
OUT3
EN5
LAN
output; the
= 220µF
= 330µF
R20
R21
Q6
3V3DLSB
3V3DL
FAULT
C
LAN
DR1
FB1
EN5
SS
S3
S5
SS
ISL6505
ISL6505
3V3
C
Regulator (V
Application Circuit
Figure 13 shows a typical application circuit for the ISL6505.
The circuit provides the 3.3V
Ethernet/LAN V
identification output, and the 5V
voltage from +3.3V, +5V
outputs. Q4 can also be a PNP transistor, such as an
MMBT2907AL. For additional, more detailed information on
the circuit, including a Bill-of-Materials and circuit board
description, see Application Note AN1053. Also see Intersil
Corporation’s web page (www.intersil.com).
C
C
C5 = 1.0µF
R
R2 = 10K
CT_VID
SS
DLA
OUT1
5V
GND
= 0.1µF
= 1K
5VSB
= 0.1µF
should be chosen as explained in the Linear
OUT1
VID_CT
1V2VID
VID_PG
5VDLSB
DLA
5VDL
OUT1
) Compensation section.
C5
voltage, the 1.2V
C
CT_VID
SB
, +5V, and +12VDC ATX supply
C
DUAL
OUT4
DUAL
Q5
C
/3.3V
OUT2
keyboard/mouse
VID
SB
voltage, the
voltage
Q4
VID PGOOD
R2
5V
1.2V
V
V
OUT4
OUT2
DUAL
VID