LMZ36002RKGT
Synchronous Buck ConverterThe LMZ36002RKGT is a synchronous buck converter from Texas Instruments. View the full LMZ36002RKGT datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
LMZ36002RKGT shares its datasheet with LMZ36002, whose page lists every part number it covers.
Official LMZ36002RKGT datasheet (PDF) — the source this page was extracted from.
LMZ36002RKGT Key Specifications
| Parameter | Value |
|---|---|
| Output Current | 2A |
| Package Dimensions | 10mm x 10mm x 4.3mm |
| Input Voltage Range | 4.5V to 60V |
| Switching Frequency | 200kHz to 1MHz |
| Output Voltage Range | 2.5V to 7.5V |
| Overcurrent Threshold | 2.5A |
| Operating Temperature Range | -40°C to 105°C |
| Thermal Shutdown Temperature | 160°C |
| Junction-To-Ambient Thermal Resistance | 14°C/W |
LMZ36002RKGT Overview
Part: LMZ36002
Type: Power Module (DC/DC Buck Converter)
Description: 4.5 V to 60 V input, 2 A synchronous step-down integrated power module with integrated inductor and adjustable output from 2.5 V to 7.5 V.
Operating Conditions:
- Supply voltage: 4.5 V to 60 V
- Operating temperature: -40 °C to 105 °C
- Output voltage range: 2.5 V to 7.5 V
- Switching frequency: 200 kHz to 1000 kHz
Absolute Maximum Ratings:
- Max junction/storage temperature: 125 °C (operating junction) / 150 °C (storage)
Key Specs:
- Maximum continuous output current: 2 A (TA = 95 °C natural convection, or TA = 105 °C with 200 LFM)
- Overcurrent threshold: 2.5 A typ
- Set-point voltage tolerance: ±0.7% typ, ±1.5% max (TA = 25 °C, IOUT = 300 mA)
- Total output voltage variation: ±2% typ (includes set-point, line, load, and temp)
- Line regulation: ±0.1% typ (TA = 25 °C, over PVIN range, IOUT = 300 mA)
- Load regulation: ±0.3% typ (TA = 25 °C, IOUT = 300 mA to IOUT max)
- Shutdown supply current: 2.4 μA typ, 6.2 μA max (INH/UVLO pin connected to AGND)
- Peak efficiency: 95% (PVIN = 12 V, VOUT = 7.5 V, IOUT = 1 A, fsw = 400 kHz)
- Default soft-start time: 4.1 ms typ (SS/TR open)
- Thermal resistance (θJA): 14 °C/W
Features:
- Complete integrated power solution in a 10 mm × 10 mm × 4.3 mm package
- Wide output voltage adjust from 2.5 V to 7.5 V
- Adjustable switching frequency from 200 kHz to 1 MHz
- Synchronizes to an external clock
- Automatic PFM mode for light-load efficiency
- Adjustable soft-start time and output voltage tracking/sequencing
- Power-good output and programmable UVLO
- Integrated shielded inductor (meets EN55022 Class B emissions)
Applications:
- Industrial and Motor Controls
- Automated Test Equipment
- Medical and Imaging Equipment
- High Density Power Systems
Package:
- QFN-43 (RVQ), 10.0 mm × 10.0 mm × 4.3 mm
LMZ36002RKGT Features
- 1 · Complete Integrated Power Solution Allows Small Footprint, Low-Profile Design
- 10 mm × 10 mm × 4.3 mm Package
- Wide-Output Voltage Adjust (2.5 V to 7.5 V)
- Adjustable Switching Frequency (200 kHz to 1 MHz)
- Synchronizes to an External Clock
- Automatic PFM Mode for Light Load Efficiency
- Adjustable Soft-Start Time
- Output Voltage Sequencing / Tracking
- Power-Good Output
- Programmable Undervoltage Lockout (UVLO)
- Overtemperature Thermal Shutdown Protection
- Overcurrent Protection (Hiccup Mode)
- Prebias Output Start-Up
- Operating Temperature Range: -40°C to 105°C
- Enhanced Thermal Performance: 14°C/W
- Meets EN55022 Class B Emissions - Integrated Shielded Inductor
- Create a Custom Design using the LMZ36002 with the WEBENCH® Power Designer
LMZ36002RKGT Applications
- Industrial and Motor Controls
- Automated Test Equipment
- Medical and Imaging Equipment
- High Density Power Systems
LMZ36002RKGT Pin Configuration
Pin Functions
| PIN - NAME | PIN - NO. | TYPE (1) | DESCRIPTION |
|---|---|---|---|
| AGND | 1, 2, 3, 4, 5, 11, 12 | G | Zero volt reference for the analog control circuitry. All of these pins are not connected together internal to the device and must be connected to one another externally using an analog ground plane on the PCB. Pins 11 and 12 are internally connected to the PGND of the device at a single point. The analog ground plane of the PCB should allow only analog ground currents to flow through these pins. |
| CLK | 8 | I | Synchronization input to synchronize the device to an external clock. Connect this pin to AGND if not used. |
| DNC | 6, 40 | - | Do Not Connect. Do not connect these pins to AGND, to another DNC pin, or to any other voltage. These pins are connected to internal circuitry. Each pin must be soldered to an isolated pad. |
| INH/UVLO | 26 | I | Inhibit and UVLO adjust pin. Use an open drain or open collector device to control the inhibit function. A resistor divider between this pin, AGND, and PVIN adjusts the UVLO voltage. Connect this pin to PVIN if not used. |
| PGND | 19, 29, 30, 31, 32, 33, 41 | G | This is the return current path for the power stage of the device. Connect these pins to the input source, the load, and to the bypass capacitors associated with PVIN and VOUT using power ground planes on the PCB. Pad 41 should be connected to the ground planes using multiple vias for good thermal performance. |
| PH | 34, 35, 36, 37, 38, 39 | O | Phase switch node. Do not place any external components on these pins or tie them to a pin of another function. |
| PVIN | 27, 28, 42 | I | Power input voltage. These pins supply all of the power to the device. Connect these pins to the input source and connect external bypass capacitors between these pins and PGND close to the device. |
| PWRGD | 20 | O | Power Good flag pin. This open drain output asserts low if the output voltage is more than approximately ±10% out of regulation. This pin is internally connected to an uncommitted 100-k Ω pull-up resistor that can be pulled up to a user-defined voltage applied to the PWRGD_PU pin. |
(1) G = Ground, I = Input, O = Output
LMZ36002RKGT Electrical Characteristics
Over -40°C to +105°C free-air temperature, PVIN = 24 V, VOUT = 5 V, IOUT = I OUT(max) , ƒsw = 500 kHz, CIN1 = 1 × 10-μF, 100-V 1210 ceramic, CIN2 = 1 × 100-μF 100-V electrolytic bulk, and COUT = 3 × 47-μF, 16-V 1210 ceramic (unless otherwise noted).
| PARAMETER | TEST | CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|---|
| INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) | INPUT VOLTAGE (PV IN ) |
| PV IN | Input voltage range | Over I OUT range | Over I OUT range | 4.5 (1) | 60 | V | |
| PV IN increasing | PV IN increasing | 3.2 | 3.8 | V | |||
| UVLO | PV IN undervoltage lockout | PV IN decreasing | PV IN decreasing | 2.8 | V | ||
| OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE |
| V OUT (ADJ) | Output voltage adjust range | Over I OUT range | Over I OUT range | 2.5 | 7.5 | V | |
| V OUT (ADJ) | Set-point voltage tolerance | T A = 25°C, I OUT = 300 mA | T A = 25°C, I OUT = 300 mA | ±0.7% | ±1.5 (2) | ||
| V OUT (ADJ) | Temperature variation | -40°C ≤ T A ≤ 105°C, I OUT = 0 A | -40°C ≤ T A ≤ 105°C, I OUT = 0 A | ±0.9% | |||
| V OUT | Line regulation | T A = 25°C, Over PV IN range, I OUT = 300 mA | T A = 25°C, Over PV IN range, I OUT = 300 mA | ±0.1% | |||
| V OUT (ADJ) | Load regulation | T A = 25°C, I OUT = 300 mA to I OUT max | T A = 25°C, I OUT = 300 mA to I OUT max | ±0.3% | |||
| V OUT (ADJ) | Total output voltage variation | Includes set-point, line, load, and temperature | Includes set-point, line, load, and temperature | ±2% | |||
| V OUT ripple | Output voltage ripple | 20-MHz Bandwidth | 20-MHz Bandwidth | 10% | mV/pp | ||
| OUTPUT CURRENT | OUTPUT CURRENT | OUTPUT CURRENT | OUTPUT CURRENT | OUTPUT CURRENT | OUTPUT CURRENT | OUTPUT CURRENT | OUTPUT CURRENT |
| I OUT | Output current | T A = 105°C, natural convection | T A = 105°C, natural convection | 0 | 1.5 | A | |
| I OUT | Output current | T A = 105°C, 200LFM | T A = 105°C, 200LFM | 0 | 2 | A | |
| I OUT | Output current | T A = 95°C, natural convection | T A = 95°C, natural convection | 0 | 2 | A | |
| I LIM | Overcurrent threshold | 2.5 | A | ||||
| PERFORMANCE | PERFORMANCE | PERFORMANCE | PERFORMANCE | PERFORMANCE | PERFORMANCE | PERFORMANCE | PERFORMANCE |
| η | PV IN = 12 V I OUT = 1 A | V OUT = 7.5 V, ƒ SW = 400 kHz | 95% | ||||
| η | V | OUT = 5 V, ƒ SW = 200 kHz | 93% | ||||
| η | PV IN = 12 V I OUT = 1 A | V OUT = 5 V, ƒ SW = 500 kHz | 92% | ||||
| η | PV IN = 12 V I OUT = 1 A | V OUT = 3.3 V, ƒ SW = 200 kHz | 90% | ||||
| η | PV IN = 12 V I OUT = 1 A | V OUT = 2.5 V, ƒ SW = 200 kHz | 87% | ||||
| η | Efficiency | PV IN = 12 V I OUT = 1 A | V OUT = 7.5 V, ƒ SW = 400 kHz | 92% | |||
| η | PV IN = 12 V I OUT = 1 A | V OUT = 5 V, ƒ SW = 250 kHz | 90% | ||||
| η | PV IN = 24 V I = 1 A | V OUT = 5 V, ƒ SW = 500 kHz | 88% | ||||
| η | OUT | V OUT = 3.3 V, ƒ SW = 250 kHz | 86% | ||||
| η | PV IN = 12 V I OUT = 1 A | V OUT = 2.5 V, ƒ SW = 250 kHz | 81% | ||||
| Transient response | I OUT = 50% load step 1 A/μs slew rate | Recovery time | 100 | μs | |||
| Transient response | I OUT = 50% load step 1 A/μs slew rate | Over/Undershoot | 2% | ||||
| SLOW START | SLOW START | SLOW START | SLOW START | SLOW START | SLOW START | SLOW START | SLOW START |
| t SS | Internal soft-start time | SS/TR pin open | SS/TR pin open | 4.1 | ms | ||
| INHIBIT | INHIBIT | INHIBIT | INHIBIT | INHIBIT | INHIBIT | INHIBIT | INHIBIT |
| V INH (high) | Inhibit control | Precision inhibit level | Precision inhibit level | 2.00 | 2.1 | 2.42 | V |
| V INH (hys) | Inhibit turn-off hysteresis | Inhibit turn-off hysteresis | -0.294 | V | |||
| I I (shutdown) | Input shutdown supply current | INH/UVLO pin conected to AGND | INH/UVLO pin conected to AGND | 2.4 | 6.2 (3) | μA | |
| POWER GOOD (PWRGD) | POWER GOOD (PWRGD) | POWER GOOD (PWRGD) | POWER GOOD (PWRGD) | POWER GOOD (PWRGD) | POWER GOOD (PWRGD) | POWER GOOD (PWRGD) | POWER GOOD (PWRGD) |
| V PWRGD | PWRGD thresholds | V OUT rising V OUT falling | Good Fault Fault Good | 95% 110% 90% 105% |
LMZ36002RKGT Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| PVIN, INH/UVLO | -0.3 | 65 | V | |
| VOUT, SENSE+, VBSEL | -0.3 | 30 (2) | V | |
| Input voltage | VADJ, VERSA-COMP, RT, RTSEL, SS/TR | -0.3 | 3.6 | V |
| PWRGD, PWRGD_PU | -0.3 | 15 | V | |
| CLK | -0.3 | 5.5 | V | |
| Output voltage | PH | -0.3 | 65 | V |
| Operating junction temperature | (3) | -40 | 125 | °C |
| Storage temperature | Storage temperature | -65 | 150 | °C |
| Peak Reflow Case Temperature (4) | Peak Reflow Case Temperature (4) | 245 (5) | °C | |
| Maximum Number of Reflows Allowed (4) | Maximum Number of Reflows Allowed (4) | 3 (5) | ||
| Mechanical shock | Mil-STD-883D, Method 2002.3, 1 msec, 1/2 sine, mounted | 1500 | G | |
| Mechanical vibration | Mil-STD-883D, Method 2007.2, 20-2000Hz | 20 | G |
- (3) See temperature derating curves in the Typical Characteristics section for thermal information.
(4) For soldering specifications, refer to the Soldering Requirements for BQFN Packages application note.
(5) Devices with a date code prior to week 14 2018 (1814) have a peak reflow case temperature of 240°C with a maximum of one reflow
LMZ36002RKGT Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| PVIN | Input voltage | 4.5 | 60 | V | |
| V OUT | Output voltage | 2.5 | 7.5 | V | |
| ƒ SW | Switching frequency | 200 | 1000 | kHz | |
| T A | Operating ambient temperature | -40 | 105 | °C |
LMZ36002RKGT Thermal Information
| THERMAL METRIC (1) | LMZ36002 RVQ (QFN) 43 PINS | UNIT | |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 14 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 2.6 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 9 | °C/W |
LMZ36002RKGT Typical Application
The LMZ36002 is a synchronous step down DC-DC power module. It is used to convert a higher DC voltage to a lower DC voltage with a maximum output current of 2 A. The following design procedure can be used to select components for the LMZ36002. Alternately, the WEBENCH ® software may be used to generate complete designs. When generating a design, the WEBENCH software utilizes an iterative design procedure and accesses comprehensive databases of components.
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| LMZ36002 | Texas Instruments | QFN-43 |
| LMZ36002RVQR | Texas Instruments | QFN-43 10x10mm |
| LMZ36002RVQR.A | Texas Instruments | B3QFN-43 |
| LMZ36002RVQT | Texas Instruments | B3QFN-43 10x10mm |
| LMZ36002RVQT.A | Texas Instruments | B3QFN-43 10x10mm |
Other Switching Regulators (Buck)
- TPS54302 – Texas Instruments, Synchronous Step-Down Converter
- MAX20730 – Analog Devices, Synchronous Switching Regulator
- TLV62568 – Texas Instruments, Synchronous Buck Converter
- LM2596 – onsemi, Step-Down Voltage Regulator
- TPS562200 – Texas Instruments, Synchronous Buck Converter
- MP1584EN – Monolithic Power Systems, Buck Converter
- MP2344GJ-Z – Monolithic Power Systems, Synchronous Step-Down Converter
- AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
All Switching Regulators (Buck) datasheetsAll Texas Instruments datasheets (2,442)
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