Specifications
| Type | Description |
|---|---|
| Part Number | LM5022-Q1 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 10-pin VSSOP (DGS), 3.00 mm x 3.00 mm nominal body |
| Automotive Qualification | AEC-Q100 Grade 1 qualified; device temperature grade 1, -40°C to 125°C ambient operating temperature range |
| Input Supply Voltage Range | 6 V to 60 V; startup regulator operating range |
| Post-Startup Operating Voltage | Operates down to 3 V; after startup |
| Internal Startup Regulator Voltage Rating | 60 V; internal startup regulator |
| MOSFET Gate Driver Peak Current | 1 A; OUT pin gate driver peak capability |
| Maximum Switching Frequency | 2.2 MHz; adjustable oscillator frequency range |
| Duty Cycle Limit | 90%; PWM controller duty cycle limit |
| Converter Topologies | Boost and SEPIC; recommended applications |
| Feedback Reference Voltage | 1.25 V; non-inverting input of internal error amplifier |
| Soft-Start Current Source | 10 µA; charges external capacitor on SS pin |
| UVLO Hysteresis Current Source | 20 µA; UVLO pin hysteresis current source |
| VIN Absolute Maximum Rating | -0.3 V to 65 V; VIN to GND |
| VCC Absolute Maximum Rating | -0.3 V to 16 V; VCC to GND |
| RT/SYNC Absolute Maximum Rating | -0.3 V to 5.5 V; RT/SYNC to GND |
| All Other Pins Absolute Maximum Rating | -0.3 V to 7 V; all other pins to GND |
| OUT Absolute Maximum Rating | -1.5 V; OUT to GND for less than 100 ns |
| Junction Temperature Absolute Maximum | 150°C; absolute maximum rating |
| Storage Temperature Range | -65°C to 150°C; Tstg |
| HBM ESD Rating | ±2000 V; per AEC Q100-002 |
| CDM ESD Rating | ±750 V; per AEC Q100-011 |
| Recommended Supply Voltage | 6 V to 60 V; recommended operating conditions |
| Recommended External VCC Voltage | 7.5 V to 14 V; external voltage at VCC |
| Recommended Junction Temperature | -40°C to 125°C; recommended operating conditions |
| Junction-to-Ambient Thermal Resistance | 161.5°C/W; DGS VSSOP, 10 pins |
| Junction-to-Case Top Thermal Resistance | 56°C/W; DGS VSSOP, 10 pins |
| Junction-to-Board Thermal Resistance | 81.3°C/W; DGS VSSOP, 10 pins |
| Junction-to-Top Characterization Parameter | 5.7°C/W; DGS VSSOP, 10 pins |
| Junction-to-Board Characterization Parameter | 80°C/W; DGS VSSOP, 10 pins |
| FB Pin Voltage | 1.225 V min, 1.250 V typ, 1.275 V max; TJ=-40°C to 125°C, VIN=24 V, RT=27.4 kΩ unless otherwise indicated |
| VCC Regulation | 6.6 V min, 7 V typ, 7.4 V max; 10 V ≤ VIN ≤ 60 V, ICC=1 mA |
| VCC Regulation | 5 V typ; 6 V ≤ VIN < 10 V, VCC pin open circuit |
| Supply Current | 3.5 mA min, 4 mA typ; OUT pin capacitance=0, VCC=10 V |
| VCC Current Limit | 15 mA min, 35 mA typ; VCC=0 V |
| Dropout Voltage Across Bypass Switch | 200 mV typ; ICC=0 mA, fSW<200 kHz, 6 V ≤ VIN ≤ 8.5 V |
| Bypass Switch Turn-Off Threshold | 8.7 V typ; VIN increasing |
| Bypass Switch Threshold Hysteresis | 260 mV typ; VIN decreasing |
| VCC Pin Output Impedance | 58 Ω typ; VIN=6 V, 0 mA ≤ ICC ≤ 5 mA |
| VCC Pin Output Impedance | 53 Ω typ; VIN=8 V, 0 mA ≤ ICC ≤ 5 mA |
| VCC Pin Output Impedance | 1.6 Ω typ; VIN=24 V, 0 mA ≤ ICC ≤ 5 mA |
| VCC UVLO Rising Threshold | 5 V typ; VCC pin UVLO |
| VCC UVLO Falling Hysteresis | 300 mV typ; VCC pin UVLO |
| Startup Regulator Leakage | 150 µA typ, 500 µA max; VIN=60 V |
| Shutdown Current | 350 µA typ, 450 µA max; UVLO=0 V, VCC open circuit |
| Error Amplifier Gain Bandwidth | 4 MHz typ; electrical characteristics |
| Error Amplifier DC Gain | 75 dB typ; electrical characteristics |
| COMP Pin Current Sink Capability | 5 mA min, 17 mA typ; VFB=1.5 V, VCOMP=1 V |
| Shutdown Threshold | 1.22 V min, 1.25 V typ, 1.28 V max; UVLO shutdown threshold |
| Shutdown Hysteresis Current Source | 16 µA min, 20 µA typ, 24 µA max; UVLO hysteresis |
| Delay from ILIM to Output | 30 ns typ; CS steps from 0 V to 0.6 V, OUT transitions to 90% of VCC |
| Current Limit Threshold Voltage | 0.434 V min, 0.5 V typ, 0.55 V max; CS pin current limit threshold |
| Leading Edge Blanking Time | 65 ns typ; current sense input |
| CS Pin Sink Impedance | 40 Ω typ, 75 Ω max; blanking active |
| Soft-Start Current Source | 7 µA min, 10 µA typ, 13 µA max; SS pin |
| Soft-Start to COMP Offset | 0.344 V min, 0.55 V typ, 0.75 V max; soft-start circuit |
| Oscillator Frequency | 170 kHz min, 200 kHz typ, 230 kHz max; RT to GND=84.5 kΩ |
| Oscillator Frequency | 525 kHz min, 600 kHz typ, 675 kHz max; RT to GND=27.4 kΩ |
| Oscillator Frequency | 865 kHz min, 990 kHz typ, 1115 kHz max; RT to GND=16.2 kΩ |
| Oscillator Frequency | 1910 kHz min, 2240 kHz typ, 2570 kHz max; RT to GND=6.65 kΩ |
| Synchronization Rising Threshold | 3.8 V typ; RT/SYNC synchronization input |
| COMP to OUT Delay | 25 ns typ; VCOMP=2 V, CS stepped from 0 V to 0.4 V |
| Minimum Duty Cycle | 0%; VCOMP=0 V |
| Maximum Duty Cycle | 90% min, 95% typ; PWM comparator |
| COMP to PWM Comparator Gain | 0.33 V/V typ; PWM comparator |
| COMP Pin Open Circuit Voltage | 4.3 V min, 5.2 V typ, 6.1 V max; VFB=0 V |
| COMP Pin Short Circuit Current | 0.6 mA min, 1.1 mA typ, 1.5 mA max; VCOMP=0 V, VFB=0 V |
| Slope Compensation Amplitude | 83 mV min, 110 mV typ, 137 mV max; slope compensation circuit |
| Output High Saturation Voltage | 0.25 V typ, 0.75 V max; VCC - VOUT, IOUT=50 mA |
| Output Low Saturation Voltage | 0.25 V typ, 0.75 V max; VOUT, IOUT=100 mA |
| OUT Pin Rise Time | 18 ns typ; OUT pin load=1 nF |
| OUT Pin Fall Time | 15 ns typ; OUT pin load=1 nF |
| Thermal Shutdown Threshold | 165°C typ; thermal characteristics |
| Thermal Shutdown Hysteresis | 25°C typ; thermal characteristics |
| Datasheet Status | request_only |
Product Overview
The LM5022-Q1 is a Texas Instruments low-side boost/SEPIC controller for Power_Management designs using boost or SEPIC converter topologies. The device includes an internal 60 V startup regulator with a 6 V to 60 V startup operating range, and it can continue operating down to 3 V after startup.
The controller integrates a 1 A peak MOSFET gate driver, adjustable oscillator operation up to 2.2 MHz, 90% duty-cycle limiting, a 1.25 V feedback reference, current-limit sensing, soft-start control, UVLO hysteresis, and synchronization through the RT/SYNC pin. Electrical characteristics include a 0.5 V typical current-limit threshold, 65 ns typical leading-edge blanking, and 25 ns typical COMP-to-OUT delay.
LM5022-Q1 is offered in a 10-pin VSSOP (DGS) package with a 3.00 mm x 3.00 mm nominal body. It is AEC-Q100 Grade 1 qualified for -40°C to 125°C ambient operation, with recommended junction temperature from -40°C to 125°C and thermal shutdown at 165°C typical.
Key Features
- AEC-Q100 Grade 1 automotive-qualified controller
- 6 V to 60 V startup regulator range
- Operates down to 3 V after startup
- 1 A peak MOSFET gate driver capability
- Adjustable oscillator up to 2.2 MHz
- PWM duty cycle limited to 90%
- Supports boost and SEPIC converter topologies
- 1.25 V feedback reference voltage
- Soft-start current source for external SS capacitor
- RT/SYNC pin supports synchronization input
- Thermal shutdown at 165°C typical
Typical Applications
- Automotive boost converters
- Automotive SEPIC converters
- Low-side power conversion stages
- Wide-input power management
- Externally driven MOSFET supplies
- Synchronized switching regulator designs
Procurement Notes
When requesting a quote for LM5022-Q1, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What type of controller is the LM5022-Q1?
The LM5022-Q1 is a Texas Instruments low-side boost/SEPIC controller in the Power_Management category. It is intended for boost and SEPIC converter topologies and includes a 1 A peak MOSFET gate driver.
What input voltage range does LM5022-Q1 support?
The startup regulator operating range is 6 V to 60 V. After startup, the device can operate down to 3 V. The recommended supply voltage range is also specified as 6 V to 60 V.
Is the LM5022-Q1 qualified for automotive operation?
Yes. LM5022-Q1 is AEC-Q100 Grade 1 qualified, with device temperature grade 1 operation across a -40°C to 125°C ambient operating temperature range.
What package is used for LM5022-Q1?
LM5022-Q1 is provided in a 10-pin VSSOP package, TI package code DGS, with a 3.00 mm x 3.00 mm nominal body size.
What switching frequency range is specified for LM5022-Q1?
The datasheet facts identify an adjustable oscillator frequency range up to 2.2 MHz. Specific RT resistor conditions include typical oscillator frequencies of 200 kHz, 600 kHz, 990 kHz, and 2240 kHz.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.