ISL6522EVAL1 Intersil, ISL6522EVAL1 Datasheet - Page 5

• Manufacturer Part Number: ISL6522EVAL1
• Description: EVALUATION BOARD ISL6522
• Manufacturer: Intersil

Specifications of ISL6522EVAL1

• Main Purpose: DC/DC, Step Down
• Voltage - Input: 10.8 ~ 13.2V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6522
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -

Electrical Specifications
Typical Performance Curves
Functional Pin Descriptions
Upper Gate Sink
Lower Gate Source
Lower Gate Sink
PROTECTION
OCSET Current Source
Soft-Start Current
TSSOP
1000
SOIC
QFN
100
and
10
10
FIGURE 1. R
COMP
PARAMETER
OCSET
EN
COMP
SS
FB
GND
RT
SS
FB
EN
1
2
3
4
SWITCHING FREQUENCY (kHz)
T
1
2
3
4
5
6
7
16
5
RESISTANCE vs FREQUENCY
R
15
6
T
GND
TO +12V
PULLUP
R
5
T
14
7
Recommended Operating Conditions, Unless Otherwise Noted (Continued)
100
PULLDOWN
13
8
TO V
14
13
12
11
10
9
8
SYMBOL
R
R
I
I
12
11
10
OCSET
VCC
PVCC
LGATE
PGND
BOOT
UGATE
PHASE
9
LGATE
UGATE
SS
LGATE
I
SS
PVCC
LGATE
PGND
BOOT
ISL6522C, I
ISL6522I, I
V
ISL6522C, I
ISL6522I, I
V
CC
OCSET
= 12V, V
1000
= 4.5VDC
ISL6522
LGATE
LGATE
TEST CONDITIONS
LGATE
LGATE
LGATE
= 0.3A
= 0.3A
= 0.3A
= 0.3A
= 6V
RT
This pin provides oscillator switching frequency adjustment.
By placing a resistor (R
200kHz switching frequency is increased according to the
following equation:
Conversely, connecting a pull-up resistor (R
to V
following equation:
Fs 200kHz
Fs
≈
≈
CC
200kHz
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
80
70
60
50
40
30
20
10
0
100
reduces the switching frequency according to the
200
+
–
5 10
------------------
4 10
------------------
•
•
R
R
300
T
T
SWITCHING FREQUENCY (kHz)
6
7
400
C
T
MIN
300
170
GATE
) from this pin to GND, the nominal
(R
-
-
-
-
-
(R
T
T
500
= 3300pF
to 12V)
to GND)
TYP
450
200
5.5
5.5
3.5
3.5
600
C
10
GATE
C
GATE
700
= 1000pF
= 10pF
MAX
230
7.2
6.5
4.5
10
T
-
-
800
) from this pin
March 10, 2006
900
UNITS
mA
FN9030.8
µA
µA
Ω
Ω
Ω
Ω
1000