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TB62D901FNG Schematic ( PDF Datasheet ) - Toshiba
| Teilenummer | TB62D901FNG |
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| Beschreibung | AC/DC Step-Down Conversion Type LED Lighting Driver | |
| Hersteller | Toshiba | |
| Logo |  |
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Gesamt 23 Seiten 
TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB62D901FNG
TB62D901FNG
AC/DC Step-Down Conversion Type LED Lighting Driver
1. General
The TB62D901FNG is a constant current driver IC ideal for
use in the step-down AC/DC conversion type LED lighting
applications.
The TB62D901FNG features architecture with automatic Off
time adjustment control that can be used to achieve minimum
LED current variations by the effect of fluctuated input voltage
or change of LED forward voltage.
The device allows linear dimming or PWM dimming. It has
extensive detection functions that are thermal shutdown,
over-current detection, over-voltage detection, under-voltage
lockout, and current sensing input terminal (ISEN1) open
detection.
2. Application
LED lighting
TB62D901FNG
SSOP16-P-225-0.65B
Weight: 0.07 g (typ.)
3. Features
• Operating supply voltage
• Dimming function
• Switching frequency
• Operation mode
• Efficiency
• Detection function
• IC standby function
• Operating temperature
• Package
: 12V to 30V
: Linear dimming (by adjustment of LED peak current)
PWM dimming
: Adjustable of up to 500kHz (MAX)
: Current continuous conduction mode
(Automatic OFF time control mode, Fixed off time mode)
Critical conduction mode
: 90% or more with recommended components
: Thermal shutdown (TSD)
: Over-current detection (OCP)
: Over-voltage detection (OVP)
: Under-voltage lockout (UVLO)
: ISEN terminal open detection (IOP)
: EN signal allows standby mode with 0.8mA (MAX) consumption
current
: Topr = −40 °C to 105 °C
: SSOP16-P-225-0.65B
1 2012-03-12
 
TB62D901FNG
10. Electrical Characteristics (Unless otherwise noted, Ta = 25 °C, VCC=12V)
Characteristics
＜Consumption current＞
Operating consumption current
Standby consumption current
＜Regulator part＞
VREG output voltage
VREG maximum output current
＜UVLO part＞
UVLO release voltage
UVLO operation voltage
＜GATE Driver part＞
GATE pin source resistance
GATE pin sink resistance
GATE pin rising time
GATE pin falling time
MOSFET OFF time
＜Detection circuit part＞
OVP operation voltage
OCP operation voltage
TSD operation temperature
TSD hysteresis temperature
＜Input pin part＞
Input pin high level
input voltage
(PWMD, EN, and MS)
Input pin Low level
input voltage
(PWMD, EN, and MS)
Input pin input current
MS pin pull down resistance
＜Detection pin part＞
ISEN pin peak voltage
Detection blanking time
Symbol
Test Conditions
Min Typ. Max Unit
ICC(ON)
ICC(OFF)
EN=H, PWMD=H, MS=L
VVSEN= VREG, VLD=VREG, VRC=0V
VISEN1=0V
EN=L
VREG
IREG
IREG=0mA
VUVLO(UP)
VUVLO(DOWN)
VCC rising
VCC falling
RGATEH
RGATEL
trGATE
tfGATE
tOFF
IGATE=-100mA
IGATE=100mA
CL=1nF
CL=1nF
EN=H, PWMD=H, MS=L
VVSEN= VREG, VLD=VREG , VRC=0V
VOVP
VOCP1
VOCP2
VOCP3
TTSD
TTSD(HYS)
VCC pin
ISEN pin, VLD=VREG
ISEN pin, VLD=0.2V
ISEN pin, VLD=3.8V
Temperature rising
Temperature falling
― 2.0 2.5 mA
― 0.5 0.8
4.9 5 5.1 V
――
2 mA
10.5 11 11.5 V
8.0 8.5 9.0 V
― 5 10 Ω
― 2.5 5 Ω
― 15 30 ns
― 15 30 ns
3.87 4 4.13 μs
32 35 38
1.4 1.6 1.8
VLD
+0.1
VLD
+0.4
VLD
+0.7
VLD
VLD
VLD
-0.0 +0.2 +0.4
130 140 150
10 20 30
V
V
°C
°C
VINH
1.5 ― VREG V
VINL
IINH
IINL
RUP
VPEAK1
VPEAK2
tBLK
0 ― 0.4 V
Measurement pin is PWMD, EN, LD, and RC.
VIN=VREG, VISEN1=0V
――
1 μA
Measurement pin is PWMD, EN, MS, LD, and
RC. -1 ― ― μA
VIN=0V, VISEN1=0V
240 300 360 kΩ
VLD=VREG
VLD=0.2V to 3.8V
0.95 1.0 1.05
VLD/1.5
-0.1
VLD/1.5
VLD/1.5
+0.1
250 400 550
V
ns
6 2012-03-12
6 Page 
TB62D901FNG
12.3 Ripple Dimming
This is a linear dimming by controlling the ripple value of LED current.
TOFF of M1 is controlled by the analog voltage input to the RC pin.
The ripple value of LED current is adjusted by changing TOFF of M1.
Input to RC pin
RC pin is connected with the GND.
(In case linear dimming by a RC pin isn't applied.)
The analog voltage is input to RC pin.
Table 4 Setting TOFF of M1
TOFF
4μs (TYP.) under the condition that VSEN is 1V.
Please refer to the following graph.
Please set the input voltage to a RC pin (VRC) in the range of 1.0V to
4.0V.
(a) Waveform of operation in adjusting the ripple value by RC pin
Figure 7 Ripple Dimming
(b) GATE turn OFF time vs VRC
VRC=4V
VRC=3V
VRC=2V
VRC=1V
VRC=4V
VRC=3V
VRC=2V
VRC=1V
Figure 8 Off time Vs VRC VSEN
Please use the IC by inputting the voltage to the VSEN pin in the range of 0.5V to 3.0V or 4.5V to VREG.
12 2012-03-12
12 Page | ||
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