ISL9187 Intersil Corporation, ISL9187 Datasheet
![no-image](/images/manufacturer_photos/0/3/342/intersil_corporation_sml.jpg)
ISL9187
Related parts for ISL9187
ISL9187 Summary of contents
Page 1
Low Quiescent Current High Efficiency Synchronous Buck Regulator ISL9107 and ISL9108 are 1.6MHz synchronous step-down regulators with integrated power switches capable of delivering 1.5A output current, which is ideal for powering low-voltage microprocessors in compact devices such ...
Page 2
Absolute Maximum Ratings VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
Electrical Specifications PARAMETER PG (NOTE 1) Output Low Voltage Delay Time PG Pin Leakage Current Minimum Supply Voltage for Valid PG Signal Internal PGOOD Low Rising Threshold Internal PGOOD Low Falling Threshold Internal PGOOD High Rising Threshold www.DataSheet4U.com Internal PGOOD ...
Page 4
Typical Operating Performance 100 3. 500 LOAD CURRENT (mA) www.DataSheet4U.com FIGURE 1. EFFICIENY vs LOAD CURRENT (V 100 EFFICIENCY @ 4. ...
Page 5
Typical Operating Performance 5V/DIV V SW 1V/DIV V OUT 1A/DIV www.DataSheet4U.com 5V/DIV FIGURE 6. SOFT-START ( 1.5A) OUT 5V/DIV V 50mV/DIV 200mA/DIV FIGURE 8. STEADY-STATE IN SKIP MODE ( 1.6V, I OUT OUT ...
Page 6
Typical Operating Performance 5V/DIV V 100mV/DIV 1A/DIV www.DataSheet4U.com FIGURE 12. LOAD TRANSIENT TEST (MODE = 1.6V 0.01A~1A 5V/DIV 100mV/DIV 1A/DIV FIGURE 14. LOAD TRANSIENT TEST (MODE = 1.6V ...
Page 7
Typical Applications INPUT 2.7V TO 5.5V C1 10µF www.DataSheet4U.com INPUT 2.7V TO 5.5V C1 10µF PARTS DESCRIPTION L Inductor C1 Input capacitor C2 Output capacitor C3 Capacitor R1(ISL9107) Resistor R2, R3 Resistor ISL9107, ISL9108 SW VIN EN GND R1 ISL9107 ...
Page 8
Block Diagram SOFT- START SHUTDOWN 0.8V EN BANDGAP www.DataSheet4U.com RSI* + VREF5 SCP FB + VREF3 + VREF4 PG* PGOOD DELAY *Note: Only applies to ISL9107. ISL9107, ISL9108 OSCILLATOR + EAMP + COMP SLOPE + COMP *Note FIGURE 17. FUNCTIONAL ...
Page 9
Theory of Operation The ISL9107 and ISL9108 are step-down switching regulators optimized for battery-powered handheld applications. The regulators operate at typical 1.6MHz fixed switching frequency under heavy load condition to allow small external inductor and capacitors to be used for ...
Page 10
Mode Selection The MODE pin is provided on ISL9107 and ISL9108 to select the operation mode. When it is driven to logic low or ground, the regulator operates in forced PWM mode. Under forced PWM mode, the device remains at ...
Page 11
The rising edge of the PG output is delayed by 215ms (typical) from the time the power-good signal is issued. This function is provided on ISL9107 only. Applications Information Inductor and Output Capacitor Selection To achieve better steady state and ...
Page 12
... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...