ISL6552CB Intersil, ISL6552CB Datasheet - Page 4

• Manufacturer Part Number: ISL6552CB
• Description: IC PWM CORE VOLTAGE REG 20-SOIC
• Manufacturer: Intersil

Specifications of ISL6552CB

• Pwm Type: Controller
• Number Of Outputs: 1
• Frequency - Max: 1.5MHz
• Voltage - Supply: 4.75 V ~ 5.25 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SOIC (7.5mm Width)
• Frequency-max: 1.5MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Duty Cycle: -

Simplified Power System Diagram
Functional Pin Description
VID25mV
COMP
VID1
VID0
VID25mV
FB
FS/DIS
COMP
VSEN
VSEN
VID3
VID2
VID1
VID0
GND
ISL6552CR (20 LEAD 5x5 QFN)
1
2
3
4
5
ISL6552CB (20 LEAD SOIC)
FB
ISL6552
20
10
6
1
2
3
4
5
6
7
8
9
VID
19
7
GND
4
18
8
PWM 1
PWM 2
PWM 3
PWM 4
17
9
18
17
16
15
14
13
12
20
19
11
16
10
VCC
PGOOD
PWM4
ISEN4
ISEN1
PWM1
PWM2
ISEN2
ISEN3
PWM3
15
14
13
12
11
ISEN4
ISEN1
PWM1
PWM2
ISEN2
RECTIFIED BUCK
RECTIFIED BUCK
RECTIFIED BUCK
RECTIFIED BUCK
SYNCHRONOUS
SYNCHRONOUS
SYNCHRONOUS
SYNCHRONOUS
ISL6552
CHANNEL
CHANNEL
CHANNEL
CHANNEL
VID3, VID2, VID1, VID0 and VID25mV
Voltage Identification inputs from microprocessor. These pins
respond to TTL and 3.3V logic signals. The ISL6552 decodes
VID bits to establish the output voltage. See Table 1.
COMP
Output of the internal error amplifier. Connect this pin to the
external feedback and compensation network.
FB
Inverting input of the internal error amplifier.
FS/DIS
Channel frequency, F
this pin to ground sets the switching frequency of the
converter. Pulling this pin to ground disables the converter
and three states the PWM outputs. See Figure 10.
GND
Bias and reference ground. All signals are referenced to this
pin.
VSEN
Power good monitor input. Connect to the microprocessor-
CORE voltage.
PWM1, PWM2, PWM3 and PWM4
PWM outputs for each driven channel in use. Connect these
pins to the PWM input of a HIP6601, HIP6602, HIP6603
driver. For systems which use 3 channels, connect PWM4
high. Two channel systems connect PWM3 and PWM4 high.
SW
, select and disable. A resistor from
MICROPROCESSOR