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Technical parameters

Key specs

Input voltage2.95 ~ 6 V
Output voltage800 mV ~ 3.6 V
Output current6 AMax
Switching frequency500 kHz ~ 2 MHz

Datasheet-verified parameters

24 items
ParameterValue and test conditionsSource
Input Voltage Range2.95-V to 6-V
Output Voltage0.8 V to 3.6 V
Output Current6-A
Switching Frequency500 kHz to 2 MHz
PackageBQFN (9×11×2.8 mm)
Operating Temperature Range-40°C to 85°C
RoHSExempt
EfficiencyUp To 96%
Reference Accuracy±1%
Thermal Impedance12°C/W junction to ambient
Absolute Maximum Ratings - Input VoltageVIN, PWRGD: Min -0.3 V, Max 7 V
Absolute Maximum Ratings - Output VoltagePH: Min -0.6 V, Max 7 V; VOUT: Min -0.6 V, Max VIN
Absolute Maximum Ratings - Operating Junction TemperatureMin -40°C, Max 125°C
Storage TemperatureMin -65°C, Max 150°C
Peak Reflow Case Temperature250°C
Recommended Operating Conditions - Input VoltageVIN = 3.3 V
Recommended Operating Conditions - Output VoltageVOUT = 1.8 V
Recommended Operating Conditions - Output CurrentIOUT = 6 A
Recommended Operating Conditions - Temperature-40°C to 85°C free-air temperature
Protection FeaturesOutput Overcurrent Protection, Over Temperature Protection, Programmable Undervoltage Lockout (UVLO)
ComplianceMeets EN55022 Class B Emissions
Number of Pins39
Weight0.85 grams
FlammabilityMeets UL 94 V-O
All parameters (7)ExpandCollapse
Power
Input Voltage2.95 V (Min) to 6 V (Max)
Output Current6 A (Max)
Output Voltage Adjust Range0.8 V (Min) to 3.6 V (Max)
AC and DC characteristics
Switching Frequency500 kHz (Typ)
Environment and package
Junction-to-ambient thermal resistance12 °C/W
Operating Temperature Range-40°C to 85°C
Package9×11×2.8 mm BQFN

Pinout and package

RKG PACAKGE 39 PINS (TOP VIEW)
RKG PACAKGE 39 PINS (TOP VIEW)
Package: BQFN (9×11×2.8 mm)
PinNameFunctionSource
1AGND: Zero VDC reference for the analog control circuitry. Should be connected directly to the PCB analog ground plane.
2DNC: Do Not Connect. Do not connect these pins to AGND, to another DNC pin, or to any other voltage.
3DNC: Do Not Connect. Do not connect these pins to AGND, to another DNC pin, or to any other voltage.
4RT/CLK: Automatically selects between RT mode and CLK mode. An external timing resistor adjusts the switching frequency. In CLK mode, the device synchronizes to an external clock.
5AGND: Zero VDC reference for the analog control circuitry. Should be connected directly to the PCB analog ground plane.
6SS/TR: Slow-start and tracking pin. Connecting an external capacitor adjusts the output voltage rise time. A voltage applied allows for tracking and sequencing control.
7STSEL: Slow-start or track feature select. Connect to AGND to enable internal SS capacitor (~1.1 ms). Leave open to enable TR feature.
8VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
9VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
10VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
11VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
12VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
13VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
14VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
15DNC: Do Not Connect. Do not connect these pins to AGND, to another DNC pin, or to any other voltage.
16DNC: Do Not Connect. Do not connect these pins to AGND, to another DNC pin, or to any other voltage.
17PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
18PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
19PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
20PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
21PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
22PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
23PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
24PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
25PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.
26DNC: Do Not Connect. Do not connect these pins to AGND, to another DNC pin, or to any other voltage.
27PWRGD: Power good fault pin. Asserts low if the output voltage is out of tolerance. A pull-up resistor is required.
28INH/UVLO: Inhibit and UVLO adjust pin. Use open drain or open collector logic to control INH. A resistor between this pin and AGND adjusts UVLO voltage.
29AGND: Zero VDC reference for the analog control circuitry. Should be connected directly to the PCB analog ground plane.
30VIN: Positive input voltage power pins, referenced to PGND. Connect external input capacitance between these pins and the PGND plane, close to the device.
31VIN: Positive input voltage power pins, referenced to PGND. Connect external input capacitance between these pins and the PGND plane, close to the device.
32VIN: Positive input voltage power pins, referenced to PGND. Connect external input capacitance between these pins and the PGND plane, close to the device.
33AGND: Zero VDC reference for the analog control circuitry. Should be connected directly to the PCB analog ground plane.
34AGND: Zero VDC reference for the analog control circuitry. Should be connected directly to the PCB analog ground plane.
35VADJ: Connecting a resistor between this pin and AGND sets the output voltage above the 0.8V default voltage.
36SENSE+: Remote sense connection. Connect this pin to VOUT at the load for improved regulation. Must be connected to VOUT at the load or module pins.
37PowerPAD (PGND): Provides electrical and thermal connection to the PCB. Should be connected directly to the PCB power ground plane using multiple vias.
38VOUT: Output voltage. Connect output capacitors between these pins and the PGND plane, close to the device.
39PH: Phase switch node. Should be connected by a small copper island under the device for thermal relief. Do not connect any external component.

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