Product Summary

The ISL6236 is a dual step-down, switch-mode power-supply (SMPS) controller. It generates logic-supply voltages in battery-powered systems. The ISL6236 include two pulse-width modulation (PWM) controllers, 5V/3.3V and 1.5V/1.05V. The ISL6236 features a linear regulator providing 3.3V/5V, or adjustable from 0.7V to 4.5V output via LDOREFIN. The linear regulator provides up to 100mA output current with automatic linear-regulator bootstrapping to the BYP input. When in switchover, the LDO output can source up to 200mA. The ISL6236 includes on-board power-up sequencing, the power-good (POK) outputs, digital soft-start, and internal soft-stop output discharge that prevents negative voltages on shutdown.

Parametrics

ISL6236 absolute maximum ratings: (1)VIN, EN LDO to GND: -0.3V to +27V; (2)BOOT to GND: -0.3V to +33V; (3)BOOT to PHASE: -0.3V to +6V; (4)VCC, EN, SKIP, TON, PVCC, POK to GND: -0.3V to +6V; (5)LDO, FB1, REFIN2, LDOREFIN to GND: -0.3V to (VCC + 0.3V); (6)OUT, SECFB, VREF3, REF to GND: -0.3V to (VCC + 0.3V; (7)UGATE to PHASE: -0.3V to (PVCC + 0.3V); (8)ILIM to GND: -0.3V to (VCC + 0.3V); (9)LGATE, BYP to GND: -0.3V to (PVCC + 0.3V); (10)PGND to GND: -0.3V to +0.3V; (11)LDO, REF, VREF3 Short Circuit to GND: Continuous; (12)VCC Short Circuit to GND: 1s; (13)LDO Current (Internal Regulator) Continuous: 100mA; (14)LDO Current (Switched Over to OUT1) Continuous: +200mA.

Features

ISL6236 features: (1)Wide Input Voltage Range 5.5V to 25V; (2)Dual Fixed 1.05V/3.3V and 1.5V/5.0V Outputs or ; (3)Adjustable 0.7V to 5.5V (SMPS1) and 0V to 2.5V (SMPS2), ±1.5%Accuracy; (4)Secondary Feedback Input (Maintains Charge Pump Voltage); (5)1.7ms Digital Soft-Start and Independent Shutdown; (6)Fixed 3.3V/5.0V, or Adjustable Output 0.7V to 4.5V, ±1.5% (LDO): 200mA; (7)3.3V Reference Voltage ±2.0%: 5mA; (8)2.0V Reference Voltage ±1.0%: 50μA; (9)Constant ON-time Control with 100ns Load-Step Response; (10)Frequency Selectable; (11)rDS(ON) Current Sensing; (12)Programmable Current Limit with Foldback Capability; (13)Selectable PWM, Skip or Ultrasonic Mode; (14)BOOT Voltage Monitor with Automatic Refresh; (15)Independent POK1 and POK2 Comparators; (16)Soft-Start with Pre-Biased Output and Soft-Stop; (17)Independent ENABLE.

Diagrams

ISL6236 current limit block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
ISL6236
ISL6236

Other


Data Sheet

Negotiable 
ISL6236A
ISL6236A

Other


Data Sheet

Negotiable 
ISL6236AIRZ
ISL6236AIRZ


IC MAIN PWR CTRLR QUAD 32-QFN

Data Sheet

0-600: $2.57
ISL6236AIRZ-T
ISL6236AIRZ-T


IC MAIN PWR CTRLR QUAD 32-QFN

Data Sheet

0-6000: $1.93
ISL6236EVAL1
ISL6236EVAL1


EVAL BOARD 1 FOR ISL6236

Data Sheet

0-1: $91.13
ISL6236EVAL2
ISL6236EVAL2


EVAL BOARD 2 FOR ISL6236

Data Sheet

0-1: $87.70
ISL6236IRZAR5281
ISL6236IRZAR5281


IC MAIN PWR CTRLR QUAD 32-QFN

Data Sheet

0-600: $2.57
ISL6236IRZA-TKR5281
ISL6236IRZA-TKR5281


IC QUAD OUT POWER CONTROL 32-QFN

Data Sheet

0-1: $3.86
1-25: $3.67
25-100: $3.12