hv9910bng Supertex, Inc., hv9910bng Datasheet

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hv9910bng

Manufacturer Part Number
hv9910bng
Description
Universal High Brightness Led Driver
Manufacturer
Supertex, Inc.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
hv9910bng-G
Manufacturer:
Supertex
Quantity:
1 951
Part Number:
hv9910bng-G
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Features
Applications
Typical Application Circuit
Switch mode controller for single switch LED drivers
Enhanced drop-in replacement to the HV9910
Open loop peak current controller
Internal 8.0 to 450V linear regulator
Constant frequency or constant off-time operation
Linear and PWM dimming capability
Requires few external components for operation
DC/DC or AC/DC LED driver applications
RGB backlighting LED driver
Back lighting of fl at panel displays
General purpose constant current source
Signage and decorative LED lighting
Chargers
C
DD
C
IN
Universal High Brightness
R
PWMD
VDD
LD
T
HV9910B
RT
VIN
GND
GATE
LED Driver
CS
General Description
The HV9910B is an open loop, current mode, control LED
driver IC. The HV9910B can be programmed to operate in
either a constant frequency or constant off-time mode. It
includes an 8.0 - 450V linear regulator which allows it to work
from a wide range of input voltages without the need for an
external low voltage supply. The HV9910B includes a PWM
dimming input that can accept an external control signal with a
duty ratio of 0 - 100% and a frequency of up to a few kilohertz.
It also includes a 0 - 250mV linear dimming input which can
be used for linear dimming of the LED current.
The HV9910B is ideally suited for buck LED drivers. Since
the HV9910B operates in open loop current mode control, the
controller achieves good output current regulation without the
need for any loop compensation. PWM dimming response is
limited only by the rate of rise and fall of the inductor current,
enabling very fast rise and fall times. The HV9910B requires
only three external components (apart from the power stage)
to produce a controlled LED current making it an ideal solution
for low cost LED drivers.
Q1
R
D1
CS
L1
C
O
HV9910B

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hv9910bng Summary of contents

Page 1

Features ► Switch mode controller for single switch LED drivers ► Enhanced drop-in replacement to the HV9910 ► Open loop peak current controller ► Internal 8.0 to 450V linear regulator ► Constant frequency or constant off-time operation ► Linear and ...

Page 2

... Y = Last Digit of Year Sealed YWW WW = Week Sealed 9910B L = Lot Number LLLL = “Green” Packaging 8-Lead SOIC (LG Last Digit of Year Sealed HV9910BNG WW = Week Sealed LLLLLLLL L = Lot Number C = Country of Origin Assembler ID* = “Green” Packaging *May be part of top marking 16-Lead SOIC (NG) = 12V, unless otherwise noted.) ...

Page 3

Electrical Characteristics Internal Regulator (cont.) Sym Description ΔV Load regulation of V DD, load DD UVLO V undervoltage lockout threshold DD ∆UVLO V undervoltage lockout hysteresis DD Current that the regulator can I IN,MAX supply before IC goes into UVLO ...

Page 4

Application Information The HV9910B is optimized to drive buck LED drivers using open-loop peak current mode control. This method of control enables fairly accurate LED current control without the need for high side current sensing or the design of any ...

Page 5

Current Sense The current sense input of the HV9910B goes to the non- inverting inputs of two comparators. The inverting terminal of one comparator is tied to an internal 250mV reference whereas the inverting terminal of the other comparator is ...

Page 6

Block Diagram VIN LD CS 250mV GND Pin Description Pin # 8-Lead SOIC 16-Lead SOIC 10, - 11, 15, 16 ...

Page 7

SOIC (Narrow Body) Package Outline (LG) 4.9x3.9mm body, 1.75mm height (max), 1.27mm pitch D 8 Note 1 (Index Area D/2 x E1/2) 1 Top View Side View Note 1: This chamfer feature is optional. If ...

Page 8

SOIC (Narrow Body) Package Outline (NG) 9.90x3.90mm body, 1.75mm height (max), 1.27mm pitch 16 Note 1 (Index Area D/2 x E1/2) 1 Top View Side View Note 1: This chamfer feature is optional ...

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