ISL8500IRZ Intersil, ISL8500IRZ Datasheet - Page 9

• Manufacturer Part Number: ISL8500IRZ
• Description: IC PWM REG 2A BUCK 12-DFN
• Manufacturer: Intersil
• Type: Step-Down (Buck), PWM - Voltage Moder

Specifications of ISL8500IRZ

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 19 V
• Current - Output: 2A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.5 ~ 25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: 12-DFN
• Voltage - Supply: 4.5 V ~ 25 V
• Frequency-max: 550kHz
• Duty Cycle: 94%
• Pwm Type: Voltage Mode
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Performance Curves
PHASE 10V/DIV
EN 5V/DIV
PG 5V/DIV
VOUT 1V/DIV
IL 1A/DIV
FIGURE 16. SOFT-START AT FULL LOAD (2ms/DIV)
FIGURE 18. OUTPUT SHORT CIRCUIT (5µs/DIV)
FIGURE 14. LOAD TRANSIENT (200µs/DIV)
IL 1A/DIV
IL 2A/DIV
9
C
power stage and the source for the internal linear regulator that provides bias for the IC. Place a
ceramic capacitor from VIN to GND, close to the IC for decoupling (typical 10µF).” on page 6.
Unless otherwise noted, operating conditions are: T
(Continued)
OUT
SS 5V/DIV
VOUT RIPPLE
100mV/DIV
PHASE 10V/DIV
PG 5V/DIV
VOUT 2V/DIV
= 100µF, C
2
ISL8500
= 2x22µF, I
OUT
FIGURE 19. OUTPUT SHORT CIRCUIT RECOVERY (1ms/DIV)
EN 5V/DIV
EN 5V/DIV
PG 5V/DIV
IL 2A/DIV
IL 0.5mA/DIV
= 0A to 2A. See “The input supply for the PWM regulator
FIGURE 15. SOFT-START AT NO LOAD (2ms/DIV)
FIGURE 17. SHUT DOWN CIRCUIT (100µs/DIV)
PG 5V/DIV
IL 2A/DIV
A
= +25°C, V
IN
= 12V, EN = VDD, L = 10µH,
PG 5V/DIV
SS 5V/DIV
PHASE 10V/DIV
VOUT 2V/DIV
VOUT 2V/DIV
VOUT 2V/DIV
December 10, 2007
FN6611.0