LM3489MM
The LM3489 is a hysteretic PFET buck controller driving an external P-channel MOSFET to deliver up to 4 A from a 4.5 V to 35 V input. Its hysteretic control provides 100% maximum duty cycle, a typical quiescent current of 0.28 uA and an enable pin for on/off control. Operating from -40 degC to 125 degC, it suits automotive, industrial and general-purpose step-down supplies.
- Package
- VSSOP-8
Product overview
The LM3489 is a hysteretic PFET buck controller driving an external P-channel MOSFET to deliver up to 4 A from a 4.5 V to 35 V input. Its hysteretic control provides 100% maximum duty cycle, a typical quiescent current of 0.28 uA and an enable pin for on/off control. Operating from -40 degC to 125 degC, it suits automotive, industrial and general-purpose step-down supplies.
- Manufacturer
- TI
- Part number
- LM3489MM
- Category
- Power Management
- Package
- VSSOP-8
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS & REACH Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
24 parametersConstruction
- ISHDN EN = 0
- 7 µA
- VEN_HYST Enable threshold hysteresis
- 130 mV
- IQ FB = 1.5 V (not switching)
- 280 µA
- VHYST Comparator hysteresis
- 10 mV
- VCL_OFFSET VFB = 1
- 0 mV
- ICL_ADJ VFB = 1.5
- 5.5 µA
- TCL VADJ = 11.5 V, VISNS = 11 V, VFB = 1
- 9 µs
- Source, ISOURCE = 100 mA
- 5.5
- Sink, ISINK = 100 mA
- 8.5
- Source, VIN = 7 V, PGATE = 3.5
- 0.44
- Sink, VIN = 7 V, PGATE = 3.5
- 0.1
- TONMIN_NOR VISNS = VADJ + 0.1 V, Cload on OUT = 1000 pF
- 100 ns
- TONMIN_CL
- 200 ns
- %VFB/ΔVIN 4.5 V ≤ VIN ≤ 35
- 0 V
Performance
- VIN voltage
- 36 V
- PGATE voltage
- 36 V
- FB voltage
- 5 V
- ISENSE voltage –1 (<1
- 00 V
- ADJ voltage
- 36 V
- VIN Supply voltage
- 35 V
- EN voltage
- 5.5 V
- VEN Enable threshold voltage Enable rising 1
- 1.5 V
- VFB Feedback voltage (1) 1
- 1.264 V
- IFB FB pin bias current (2) VFB = 1
- 300 nA
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.