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TH1200F の電気的特性と機能

TH1200FのメーカーはZetex Semiconductorsです、この部品の機能は「350mA High Efficiency Step Down LED Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 TH1200F
部品説明 350mA High Efficiency Step Down LED Driver
メーカ Zetex Semiconductors
ロゴ Zetex Semiconductors ロゴ 




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TH1200F Datasheet, TH1200F PDF,ピン配置, 機能
TH1200F
350mA High Efficiency Step Down LED Driver
FEATURES
„ LED drive current up to 350mA
„ Compatible with 12V and 24V standard systems
„ Handles transients up to 40V
„ Single Pin Control and Dimming function
„ Power Efficiency up to 94%
„ Drives LED strings of up to 32V
„ Open and short LED protection
„ Parallel configuration for higher output current
„ RoHS-compliant TSOT-23 5-lead package
APPLICATIONS
„ 12V and 24V Lighting Systems
„ Automotive and Aircraft Lighting
„ General lighting
„ High Brightness 350mA LEDs
ORDERING INFORMATION
Part Number
TH1200F-YE-ML1
Quantity
per Reel
3000
* Plated Finish: NiPdAu
PIN CONFIGURATION
Package
Marking
TFxx
TSOT-23 5-lead
CTRL 1
5 VBAT
GND 2
RSET 3
4 SW
(Top View)
DESCRIPTION
The TH1200F is a high efficiency step-down converter
optimized to drive high current LEDs. A patented
switching control algorithm allows highly efficient and
accurate LED current regulation. A single RSET
resistor sets the full scale LED string current up to
350mA from supplies as high as 36V.
The switching architecture of the TH1200F results in
extremely low internal power dissipation allowing the
device to be housed in a tiny package without the
need for dedicated heat sinking. The device is
compatible with switching frequencies of up to 1MHz,
making it ideal for applications requiring small footprint
and low value external inductors.
Analog dimming and LED shutdown control is
provided via a single input pin, CTRL. Additional
features include overload current protection and
thermal shutdown. The device is available in the low
profile 5-lead thin SOT23 package and is ideal for
space constrained applications.
For Ordering Information details, see page 14.
TYPICAL APPLICATION CIRCUIT
Bulb Replacement
VBAT
9V C1
4.7µF
R1
10k
VBAT
TH1200F
RSET
CTRL
SW
GND
D C2
10µF
L
22µH
300mA
D: Central Schottky CMDSH05-4
L: Sumida CDRH6D26-220
See Table 1 on page 6 for external component selection.
1

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TH1200F pdf, ピン配列
TH1200F
Typical Operation Characteristics
VIN = 13V, ILED = 300mA, L = 22μH, C1= 4.7μF, C2 = 10μF, TAMB = 25°C unless otherwise specified
Input Operating Supply Current
1.0
Idle Mode Supply Current (CTRL = 0V)
200
0.8
150
0.6
100
0.4
0.2 50
0.0
8 10 12 14 16 18 20 22 24
INPUT VOLTAGE [V]
0
0 4 8 12 16 20 24
INPUT VOLTAGE [V]
CTRL Input Bias Current
250
200
150
100
50
0
0 2 4 6 8 10 12
CTRL VOLTAGE [V]
RSET Voltage vs. Temperature
1.30
VIN = 13V
1.25
1.20
1.15
1.10
-40
0 40 80
TEMPERATURE [°C]
120
RSET Voltage vs. CTRL Voltage
1.4
1.2
1.0 +25°C
0.8 -40°C
+ 85°C
0.6
0.4
0.2
0.0
0
1 23
CTRL VOLTAGE [V]
4
LED Current vs. RSET
400
300
200
100
0
5 10 15 20 25 30 35
RSET [k]
3


3Pages


TH1200F 電子部品, 半導体
TH1200F
Typical Operation Characteristics
VIN = 13V, ILED = 300mA, L = 22μH, C1= 4.7μF, C2 = 10μF, TAMB = 25°C unless otherwise specified
RSET Transient Response
Line Transient Response (10V to 13V)
External Component Selection
Table 1 provides the recommended external
components L and C2 that offer the best performance
relative to the LED current accuracy, LED ripple
current, switching frequency and component size.
LED current
(mA)
150
< 150
1 LED
L inductor
(µH)
C2 Capacitor
(µF)
10 2.2
22 4.7
33 4.7
47 10
2 LEDs
L inductor
(µH)
C2 Capacitor
(µF)
22 4.7
47 2.2
Table 1. External Component Selection
Note: Larger C2 capacitor values allow to reduce further the LED ripple current if needed.
6

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ページ 合計 : 15 ページ
 
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部品番号部品説明メーカ
TH1200F

350mA High Efficiency Step Down LED Driver

Zetex Semiconductors
Zetex Semiconductors


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