U6084B-FP ATMEL Corporation, U6084B-FP Datasheet
U6084B-FP
Related parts for U6084B-FP
U6084B-FP Summary of contents
Page 1
... Ground-wire Breakage Protection Description The U6084B is a PWM-IC with bipolar technology designed for the control of an N-channel power MOSFET used as a high-side switch. The IC is ideal for use in the brightness control (dimming) of lamps such as in dashboard applications. For constant brightness, the preselected duty-cycle can be reduced automatically as a function of the supply voltage ...
Page 2
... Not connected 9 LATCH Status short-circuit latch 10 NC Not connected 11 DELAY Short-circuit protection delay 12 SENSE Current sensing 13 2VS Voltage doubler 14 OUTPUT Output 15 NC Not connected 16 VS Supply voltage V U6084B 2 GND 1 EN/DIS REDUCT OSC OUTPUT ...
Page 3
... I, until the lower switching threshold is reached. The second source is then switched off again and the procedure starts once more. Function Disable Enable and R 1 and ground GND (V Batt Batt and the oscillator cur µA, we thus obtain a controlled slope of osc , is thus discharged by the 2 U6084B 2 16.5 V). 3 ...
Page 4
... Example for Oscillator Frequency Calculation Pins and 15 Pin 9 – Status Short Circuit Latch U6084B – T100 S 1 Batt – T<100 S 2 Batt – Batt S 3 where V = High switching threshold 100% duty cycle ...
Page 5
... T2 is charged by a current source of 20 µ not charged by parasitic currents. Capacitor C 5 100 mV. Owing to the differ- T1 < 5.0 V, the external FET is switched off Batt U6084B ) is reached. T11 5 3 5.4 V. Batt < the Batt 5 ...
Page 6
... Stabilized voltage Short-circuit Protection Short-circuit current limitation Short-circuit detection Delay Timer Short-circuit Detection Switched off threshold Charge current Discharge current Capacitance current Output short-circuit latch Saturation voltage Notes: 1. Reference point is battery ground U6084B 6 Symbol amb T stg Symbol R thJA Test Conditions ...
Page 7
... Pin 500 µA 4 Pin6 V T100 V = High, = -------------- T<100 V = Low, = ---------------- - -------- - Batt C open 470 nF duty cycle = 50% U6084B Symbol Min. Typ. Max 280 400 520 27.5 30 S+14 S+15 S+16 V 0.35 0.70 0. 1.0 14 -1.0 ...
Page 8
... Figure 3. Application U6084B 8 4677B–AUTO–02/04 ...
Page 9
... Ordering Information Extended Type Number U6084B-FP Package Information Package SO16 Dimensions Revision History Changes from Rev. 4677A - 02/03 to Rev. 4677B - 02/04 4677B–AUTO–02/04 Package SO16 10.0 9.85 0.4 1.27 8. Please note that the referring page numbers in this section are referred to the specific revision mentioned, not to this document. ...
Page 10
... Fax: (81) 3-3523-7581 Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein ...