ISL6529CR Intersil, ISL6529CR Datasheet - Page 17

• Manufacturer Part Number: ISL6529CR
• Description: IC CTRLR PWM DUAL REG 16-QFN
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of ISL6529CR

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.5 ~ 4.5 V
• Frequency - Switching: 600kHz
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Voltage - Input: -
• Power - Output: -

However, if logic-level transistors or transistors with low
V
be exercised, as the low gate threshold could lead to some
shoot-through despite counteracting circuitry present aboard
the ISL6529.
N-Channel MOSFET Transistor Selection
The main criteria for selection of the linear regulator pass
transistor is package selection for efficient removal of heat.
Select a package and heatsink that maintains the junction
temperature below the rating with a maximum expected
ambient temperature.
ISL6529 Converter Application Circuit
GS(on)
VOUT2
(1A)
2.5V
are used, close attention to layout guidelines should
+3.3V
Q1, Q2
Q3
L1
L2
Q3
C14
1µF
FIGURE 17. POWER SUPPLY APPLICATION CIRCUIT FOR A GRAPHICS CONTROLLER
IRF7313
919AS-4R7M
MTD3055V
919AS-1R0N
1000µF
C7
C12
1500µF
17
4.64kΩ
1.0kΩ
R13
R5
2.15kΩ
C4
470pF
R12
6.8kΩ
R6
IR
Fairchild
TOKO
TOKO
1µF
+5V
C5
DRIVE2
FB2
ISL6529, ISL6529A
GND
5VCC
1µH
ISL6529A
ISL6529
L2
12VCC
The power dissipated in the linear regulator is:
where I
nominal output voltage of the linear regulator.
References
Intersil documents are available on the web at
http://www.intersil.com.
P
[1] Technical Brief, Intersil Corporation, TB417,
PGND
LINEAR
UGATE
LGATE
COMP
+12V
C15
1µF
http://www.intersil.com/data/tb/tb417.pdf
FB
O
≅
is the maximum output current and V
I
O
×
(
V
1.0kΩ
R4
C6
470µF
IN
–
10.7kΩ
R2
V
47nF
C1
OUT
)
Q1
Q2
1.2nF
C2
10Ω
R3
4.7µH
C8
4.7µF
1.0kΩ
L1
R1
470µF
C9
47nF
C3
OUT
C10
1µF
April 12, 2005
(EQ. 18)
is the
VOUT1
FN9070.5
(6A)
1.6V