MAX16826_15 Datasheet, PDF (3/26 Pages) Maxim Integrated Products – Programmable, Four-String HB LED Driver with Output-Voltage Optimization and Fault Detection

MAX16826
Programmable, Four-String HB
LED Driver with Output-Voltage
Optimization and Fault Detection
Electrical Characteristics (continued)
(V_IN = 12V, R19 = 2kΩ, C33 = 2200pF, R17 = 1.27kΩ, C_{DL_} = 0.01μF, T_J = -40°C to +125°C, unless otherwise noted. Typical values
are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Maximum Receive SCL/SDA Rise
Time
t_R
C_B = 400pF
300
ns
Minimum Receive SCL/SDA Rise
Time
t_R
C_B = 400pF
60
ns
Maximum Receive SCL/SDA Fall
Time
t_F
C_B = 400pF
300
ns
Minimum Receive SCL/SDA Fall
Time
t_F
C_B = 400pF
60
ns
Transmit SDA Fall Time
t_F
Pulse Width of Suppressed Spike
t_SP
INTERNAL REGULATORS (IN, V_CC)
V_CC Output Voltage
V_VCC
C_B = 400pF, I_O = 3mA
0V < I_VCC < 30mA (Note 2),
4.75V < V_IN < 24V, DL, DL1 to DL4
unconnected
60
250
ns
50
ns
4.5
5.25 5.65
V
V_CC Undervoltage Lockout
V_CC Undervoltage Lockout
Hysteresis
V_{VCC_UVLO}
V_{VCC_HYS}
V_CC rising
4.5
V
135
175
205
mV
IN Shunt Regulation Voltage
PWM GATE DRIVER (DL)
I_IN = 250mA
24.05 26.0 27.5
V
Peak Source Current
Peak Sink Current
DL High-Side Driver Resistance
DL Low-Side Driver Resistance
Minimum DL Pulse Width
I_DL = -100mA
I_DL = +100mA
2
A
2
A
2.25
Ω
1.30
Ω
40
ns
PWM CONTROLLER, SOFT-START (FB, COMP, OVP)
FB Voltage Maximum
V_FB,MAX
FB shorted to COMP; MAX16826 only
FB shorted to COMP; MAX16826B only
FB Voltage Minimum
V_FB,MIN
FB shorted to COMP; MAX16826 only
FB shorted to COMP; MAX16826B only
FB Voltage LSB
FB shorted to COMP; MAX16826 only
FB shorted to COMP; MAX16826B only
FB Input Bias Current
I_FB
0V < V_FB < 5.5V
Feedback-Voltage Line
Regulation
Level to produce V_COMP = 1.25V,
4.5V < V_VCC < 5.5V
Soft-Start Current
I_SS
V_CSS = 0.5V_VCC
OVP Input Bias Current
I_OVP
0V < V_OVP < 5.5V
Slope Compensation
I_SLOPE
1.230
1.23
862
735
-100
3.2
-100
19
1.250
1.25
876
750
2.94
3.9
0
6.0
0
26
1.260
1.27
885
765
+100
±0.25
10.4
+100
32
V
mV
mV
nA
%/V
μA
nA
μA/μs
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