MAX16816 Datasheet, PDF (5/33 Pages) Maxim Integrated Products – Programmable Switch-Mode LED Driver with Analog-Controlled PWM Dimming

Programmable Switch-Mode LED Driver
with Analog-Controlled PWM Dimming
ELECTRICAL CHARACTERISTICS (continued)
(V_CC = V_UVEN = 14V, C_REG1 = 1µF, C_REG2 = 1µF, C_CLMP = 0.1µF, R_T = 25kΩ, T_A = T_J = -40°C to +125°C, unless otherwise noted.
Typical specifications are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
CLKOUT High Level
CLKOUT Low Level
I_SINK = 0.8mA
I_SOURCE = 1.6mA
CLKOUT Maximum Load
Capacitance
C_{CLK_CAP} f_SW = 500kHz
DIM SYNC, DIM RAMP, AND DIM PWM GEN
Internal RAMP Frequency
f_RAMP
External Sync Frequency
Range
f_DIM
MIN TYP MAX UNITS
2.8
V
0.4
V
500
pF
160
200
240
Hz
80
2000
Hz
External Sync Low-Level
Voltage
V_LTH
0.4
V
External Sync High-Level
Voltage
V_HTH
DIM Comparator Offset
V_DIMOS
DIGITAL SOFT-START AND BINNING
Digital Soft-Start Duration register is ‘000’
Digital Soft-Start Duration register is ‘001’
Digital Soft-Start Duration register is ‘010’
Soft-Start Duration
Digital Soft-Start Duration register is ‘011’
t_SS
Digital Soft-Start Duration register is ‘100’
Digital Soft-Start Duration register is ‘101’
Digital Soft-Start Duration register is ‘110’
Digital Soft-Start Duration register is ‘111’
Binning Adjustment register is ‘0000’
Binning Adjustment register is ‘0001’
Binning Adjustment register is ‘0010’
Binning Range
Binning Adjustment register is ‘0011’
Binning Adjustment register is ‘0100’
Binning Adjustment register is ‘0101’
Binning Adjustment register is ‘0110’
Binning Adjustment register is ‘0111’
Binning Adjustment register is ‘1000’
Binning Adjustment register is ‘1001’
Binning Adjustment register is ‘1010’
OVERVOLTAGE COMPARATOR, LOAD OVERCURRENT COMPARATOR
OVP Overvoltage Comparator
Threshold
V_OV
V_OV rising
3.2
V
170
200
300
mV
4096
2048
1536
1024
µs
768
512
256
0
100.00
106.67
113.33
120.00
126.67
133.33
mV
140.00
146.67
153.33
160.00
166.67
1.20 1.235 1.27
V
OVP Overvoltage Comparator
Hysteresis
V_{OV_HYST}
63.5
mV
_______________________________________________________________________________________ 5