參數(shù)資料
型號： TPS65800RTQTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 8 X 8 MM, GREEN, PLASTIC, QFN-56
文件頁數(shù)： 9/98頁
文件大?。?/td> 2077K
代理商： TPS65800RTQTG4
www.ti.com
SLVS606C – SEPTEMBER 2005 – REVISED FEBRUARY 2007
ELECTRICAL CHARACTERISTICS – LED AND PWM DRIVERS (continued)
Over recommended operating conditions (typical values at T
J = 25°C), application circuit as in Figure 3 (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tFALL_PWM
Fall time PWM voltage
IOL_PWM = 150 mA
0.2
1
2.8
s
DPWM = 6.25% to 100%,
DPWM
PWM driver duty cycle
Duty cycle range
set via I2C,
--
6.25% minimum step
LED_PWM DRIVER, LED_PWM OPEN DRAIN OUTPUT
DLEDPWM = 0% to 99.6%,
DLEDPWM
LED_PWM driver duty cycle
Duty cycle range
set via I2C, 256 steps
0.4% minimum step
SM3_LF_OSC = 0
122
LED_PWM driver duty cycle
256 pulses within repetition
fREP(LEDPWM)
Hz
pattern repetition rate
rate time
SM3_LF_OSC = 1
180
VOL(LEDPWM)
Low level output voltage
I(LED_PWM) = 150 mA
0.5
V
VOH(LEDPWM)
High level output voltage
6
V
tRISE_LEDPWM
Rise time PWM voltage
IOL_LEDPWM = 150 mA
0.2
1
2.8
s
tFALL_LEDPWM
Fall time PWM voltage
IOL_LEDPWM = 150 mA
0.2
1
2.8
s
RGB DRIVER, RED/GREEN/BLUE OPEN DRAIN OUTPUTS
tFLASH(RGB) = 1 to 8 s, set
Flashing period range
via I2C, 0.5 s minimum
s
tFLASH(RGB)
Flashing period
step, 8 steps
Total accuracy
–20%
20%
Set via I2C, tFLASH(ON) =
Flash on time range, value selectable by I2C
0.1/0.15/0.2/0.25/0.3/0.4/
s
tFLASH(ON)
Flash on time
0.5/0.6 s
Total accuracy, relative to selected value
– 20%
20%
DRGB = 0% to 99.98%, set
DRGB
Duty cycle
Duty cycle range, value selectable via I2C
via I2C, 3.23% minimum
step
00 = (Driver set to
OFF)
V(RED) = V(GREEN) =
01
2.4
4
5.6
ISINK(RGB)
RGB output sink current
V(BLUE) = 2 V, set via I2C
mA
RGB_ISET1,0
10
4.8
8
11.2
11
7
12
16.6
Output low voltage, 8 mA load, RED/GREEN/BLUE
VOL(RGB)
Low level output voltage
0.3
V
PINS
V(RED)=V(GREEN)=V(BLUE) = 4.7 V, all drivers
ILKG(RGB)
Output off leakage current
1
A
disabled
tRISE_RGB
Voltage rise time
8-mA load
2
5
8
s
tFALL_RGB
Voltage fall time
8-mA load
2.4
5
8
s
17
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