Microchip HV9861A Manual
Microchip
Ikke kategoriseret
HV9861A
Læs gratis den danske manual til Microchip HV9861A (22 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 11 personer og har en gennemsnitlig bedømmelse på 4.9 stjerner ud af 6 anmeldelser. Har du et spørgsmål om Microchip HV9861A, eller vil du spørge andre brugere om produktet?
Side 1/22
2014-2022 Microchip Technology Inc. and its subsidiaries DS20005333B-page 1
Features
• Fast Average Current Control
• Programmable Constant Off-Time Switching
• PWM/Linear Dimming Input
• Output Short Circuit Protection with Skip Mode
• Ambient Operating Temperature -40°C to +125°C
• Pin-Compatible with the HV9910B and HV9961
Applications
• DC/DC or AC/DC LED Driver Applications
• LED Back-Light Driver for LCD Displays
• General Purpose Constant Current Source
• LED Signage and Displays
• Architectural and Decorative LED Lighting
• LED Street Lighting
Description
HV9861A is a patented, average-mode, constant-
current control, LED driver IC operating in a constant
off-time mode. Unlike the HV9910B, this control IC
does not produce a peak-to-average error, which
therefore greatly improves the accuracy, line and load
regulation of the LED current without any need for loop
compensation or high-side current sensing. The output
LED current accuracy is ±3%.
The IC is equipped with a current limit comparator for
hiccup-mode output short circuit protection. Internal
over-temperature protection is provided. The internally
regulated voltage (VDD) for the HV9861A is 7.5V.
The IC can be powered from a 15 - 450V supply. A
PWM dimming input is provided that accepts an
external control TTL-compatible signal. The output
current can be programmed by an internal 270 mV
reference, or controlled externally through a 0 - 1.5V
dimming input.
HV9861A is pin-to-pin compatible with the HV9910B
and HV9961, and can be used as a drop-in
replacement for many applications to improve the LED
current accuracy and regulation.
Package Types
8-Lead SOIC 16-Lead SOIC
VIN
CS
GND
GATE
RT
LD
VDD
PWMD
VIN
NC
NC
CS
GND
NC
NC
GATE
NC
NC
RT
LD
VDD
NC
NC
PWMD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
8
7
6
5
See Table 2-1 for pin information
HV9861A
LED Driver with Average-Mode Constant Current Control
2014-2022 Microchip Technology Inc. and its subsidiaries DS20005333B-page 2
HV9861A
Typical Application Circuit
Functional Block Diagram
PWMD
VDD
LD
GATE
CS
RT
VIN
HV9861A
15VDC to
450VDC
Sets
LED
Current
LED
Load
GND
RCS
RT
R Q
S Q
TOFF
Timer
Latch
Enable
Blanking
0.45V
min (VLD
•
0.18, 0.27V)
650µs
Current
Mirror
i
Regulator
VIN
LD
CS
GND
VDD
GATE
PWMD
RT
UVLO
POR
0.15/0.20V
Average Current
Control Logic
OUT
Auto-REF
HV9861A
CLK
IN
+
-
+
-
+
-
11µA
Produkt Specifikationer
| Mærke: | Microchip |
| Kategori: | Ikke kategoriseret |
| Model: | HV9861A |
Har du brug for hjælp?
Hvis du har brug for hjælp til Microchip HV9861A stil et spørgsmål nedenfor, og andre brugere vil svare dig
Ikke kategoriseret Microchip Manualer
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
Ikke kategoriseret Manualer
- AXITEC
- Avital
- Vango
- Trotec
- SE Electronics
- Enerdrive
- XGIMI
- Musicmate
- Leen Bakker
- GoldenEar
- Comfortisse
- Martin Audio
- EPEVER
- Valeo
- Fiskars
Nyeste Ikke kategoriseret Manualer
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025
17 Juni 2025