參數(shù)資料
型號(hào)： TPS65708YZHT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, PBGA16
封裝： GREEN, DSBGA-16
文件頁(yè)數(shù)： 18/22頁(yè)
文件大?。?/td> 2189K
代理商： TPS65708YZHT
SLVSAE1A
– OCTOBER 2010 – REVISED FEBRUARY 2011
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted: VIN1 = VIN2 = VCC = 5V, L = 1.5
H, COUTDCDCx = 10F, COUTLDOx = 2.2F, TA = –40°C to 85°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
LED CURRENT SINK
Set internally by EEPROM to 7.5mA; available
Isink Current (LED current for 100% duty
ILED
current range from 7.5mA to 30mA; contact
7.5
mA
cycle)
factory about default settings other than 7.5mA
Minimum voltage drop from ISINK to
at 7.5mA
≤ ISINK ≤ 20mA
0.4
V
AGND needed for proper regulation
Minimum voltage drop from ISINK to
at 20mA
< ISINK ≤ 30mA
0.55
V
AGND needed for proper regulation
ISINK accuracy
ISINK
≥ 10mA
–5%
5%
ISINK accuracy
7.5mA
≤ ISINK < 10mA
–10%
10%
PWM duty cycle
5%
100%
PWM frequency
50
kHz
VIH
High Level Input Voltage for PWM pin
ISINK is enabled
1.2
VCC
V
VIL
Low Level Input Voltage for PWM pin
ISINK is high resistive
0
0.4
V
Ilkg
Input Leakage Current on PWM pin
0.01
0.1
μA
V(ISINK) ≥ 0.4V for 7.5 mA ≤ ISINK ≤ 20mA; or
ISINK rise / fall time
500
ns
V(ISINK) > 0.6V for 20mA < ISINK ≤ 30mA
ISINK rise / fall time
V(ISINK) ≤ 0.6V; 20mA < ISINK ≤ 30 mA
700
ns
2010–2011, Texas Instruments Incorporated
5
Product Folder Link(s) :TPS65708
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