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ISL9305IRTHWCNYZ-T7A

PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (2), Linear (LDO) (2) 3MHz 16-TQFN (4x4)

Manufacturer:

Renesas Technology Corp
Mfr.Part #:

ISL9305IRTHWCNYZ-T7A
Datasheet:

ISL9305IRTHWCNYZ-T7A Datasheet (PDF)
Topology:

Step-Down (Buck) (2), Linear (LDO) (2)
Number of Outputs:

4
Frequency - Switching:

3MHz
Voltage/Current - Output 1:

1.2V, 1.5A
EDA/CAD Models:

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ISL9305IRTHWCNYZ-T7A General Description

The ISL9305 is an integrated mini Power Management IC (mini-PMIC) ideal for applications of powering low-voltage microprocessor or multiple voltage rails with battery as input sources, such as a single Li-ion or Li-Polymer. ISL9305 integrates two high-efficiency 3MHz synchronous step-down converters (DCD1 and DCD2) and two low-input, low-dropout linear regulators (LDO1 and LDO2). The 3MHz PWM switching frequency allows the use of very small external inductors and capacitors. Both step-down converters can enter skip mode under light load conditions to further improve the efficiency and maximize the battery life. For noise sensitive applications, they can also be programmed through I²C interface to operate in forced PWM mode regardless of the load current condition. The I²C interface supports on-the-fly slew rate control of the output voltage from 0. 825V to 3. 6V at 25mV/step size for dynamic power saving. Each step-down converter can supply up to 800mA load current. The default output voltage can be set from 0. 8V to V_IN using external feedback resistors on the adjustable version, or the ISL9305 can be ordered in factory pre-set voltage options from 0. 9V to 3. 6V in 50mV step. The ISL9305 also provides two 300mA low dropout (LDO) regulators. The input voltage range is 1. 5V to 5. 5V allowing them to be powered from one of the on-chip step-down converters or directly from the battery. The default LDO power-up output comes with factory pre-set fixed output voltage options between 0. 9V to 3. 3V. The ISL9305 is available in a 4mmx4mm 16 Ld TQFN package.

Key Features

Dual 800mA, Synchronous Step-down Converters and Dual 300mA, General-purpose LDOs
Input Voltage Range: DCD1/DCD2: 2.3V to 5.5V, - LDO1/LDO2: 1.5V to 5.5V
400kb/s I²C-bus Series Interface Transfers the Control Data Between the Host Controller and the ISL9305
Adjustable Output Voltage: VODCD1/VODCD2: 0.8V to VIN
Fixed Output I²C Programmability: At 25mV/Step: 0.825V to 3.6V
LDO1/LDO2 Output Voltage I²C Programmability at 50mV/Step: 0.9V to 3.6V
50μA I_Q (Typ) with DCD1/DCD2 in Skip Mode; 20μA I_Q (Typ) for each Enabled LDO
On-the-fly I²C Programming of DC/DC and LDO Output Voltages
DCD1/DCD2 I²C Programmable Skip Mode Under Light Load or Forced Fixed Switching Frequency PWM Mode
Small, Thin, 4mmx4mm TQFN Package

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - Linear + Switching	Series	-
Topology	Step-Down (Buck) (2), Linear (LDO) (2)	Number of Outputs	4
Frequency - Switching	3MHz	Voltage/Current - Output 1	1.2V, 1.5A
Voltage/Current - Output 2	1.8V, 1.5A	Voltage/Current - Output 3	3.3V, 300mA
w/LED Driver	No	w/Supervisor	No
w/Sequencer	No	Voltage - Supply	1.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	Mounting Type	Surface Mount
Base Product Number	ISL9305