LM3429_14 Datasheet, PDF (5/50 Pages) Texas Instruments – LM3429Q1 N-Channel Controller for Constant Current LED Drivers

LM3429
www.ti.com
SNVS616F – APRIL 2009 – REVISED JANUARY 2010
Electrical Characteristics ⁽¹⁾
Specifications in standard type face are for T_J = 25°C and those with boldface type apply over the full Operating
Temperature Range ( T_J = −40°C to +125°C). Minimum and Maximum limits are guaranteed through test, design, or
statistical correlation. Typical values represent the most likely parametric norm at T_J = +25°C, and are provided for reference
purposes only. Unless otherwise stated the following condition applies: V_IN = +14V.
Symbol
Parameter
Conditions
Min
Typ
(2)
(3)
Max
(2)
Units
STARTUP REGULATOR (V_CC)
V_CC-REG
V_CC Regulation
I_CC-LIM
V_CC Current Limit
I_Q
Quiescent Current
V_CC-UVLO
V_CC UVLO Threshold
V_CC-HYS
V_CC UVLO Hysteresis
OVER-VOLTAGE PROTECTION (OVP)
I_CC = 0 mA
V_CC = 0V
Static
V_CC Increasing
V_CC Decreasing
V_TH-OVP
I_HYS-OVP
OVP OVLO Threshold
OVP Hysteresis Source
Current
OVP Increasing
OVP Active (high)
ERROR AMPLIFIER
V_CSH
CSH Reference Voltage
Error Amplifier Input Bias
Current
With Respect to AGND
COMP Sink / Source
Current
Transconductance
Linear Input Range
Transconductance
Bandwidth
(4)
-6dB Unloaded Response⁽⁴⁾
OFF TIMER (RCT)
t_OFF-MIN
R_RCT
Minimum Off-time
RCT Reset Pull-down
Resistance
RCT = 1V through 1 kΩ
V_RCT
V_IN/25 Reference Voltage
PWM COMPARATOR
V_IN = 14V
COMP to PWM Offset
CURRENT LIMIT (IS)
V_LIM
t_ON-MIN
Current Limit Threshold
V_LIM Delay to Output
Leading Edge Blanking
Time
HIGH SIDE TRANSCONDUCTANCE AMPLIFIER
Input Bias Current
Transconductance
Input Offset Current
Input Offset Voltage
6.30
20
3.70
1.180
10
1.210
-0.6
10
0.5
540
700
215
75
20
-1.5
-7
6.90
27
1.6
4.17
4.08
0.1
1.240
20
1.235
0
26
100
±125
1.0
35
36
565
800
245
35
250
10
119
0
0
7.35
V
mA
3.0
4.50
V
1.280
30
1.260
0.6
40
75
120
585
900
275
75
450
1.5
7
V
µA
V
µA
µA/V
mV
MHz
ns
Ω
mV
mV
mV
ns
µA
mA/V
µA
mV
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Operating Ratings is not implied. The recommended Operating Ratings indicate
conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are with respect
to the potential at the AGND pin, unless otherwise specified.
(2) All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits
are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3) Typical numbers are at 25°C and represent the most likely norm.
(4) These electrical parameters are guaranteed by design, and are not verified by test.
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