參數(shù)資料
型號(hào): ISL88550AIRZ-T
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Synchronous Step Down Controller with Sourcing and Sinking LDO Regulator
中文描述: SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PQCC28
封裝: 5 X 5 MM, ROHS COMPLIANT, PLASTIC, MO-220WHHD-1, TQFN-28
文件頁(yè)數(shù): 10/25頁(yè)
文件大小: 928K
代理商: ISL88550AIRZ-T
10
FN6168.0
October 12, 2005
FIGURE 15. VDDQ STARTUP AND SHUTDOWN INTO LIGHT
LOAD, DISCHARGE ENABLED
FIGURE 16. VTT, VTTR STARTUP AND SHUTDOWN
FIGURE 17. OVERVOLTAGE AND TURN-OFF OF BUCK
OUTPUT
FIGURE 18. SHORT CIRCUIT AND RECOVERY OF VDDQ
FIGURE 19. SHORT CIRCUIT AND RECOVERY OF VDDQ
FIGURE 20. SHORT CIRCUIT AND RECOVERY OF VTT
Typical Operating Characteristics
(Continued)
VIN = 12V, VDDQ = 1.8V, TON = GND, SKIP# = AVDD, circuit of Figure 28, T
A
= 25°C, unless otherwise noted.
2ms/DIV
VDDQ
1V/DIV
VTT
500mV/DIV
POK1
5V/DIV
SHDNA#
5V/DIV
R
VDDQ
=10
, R
VTT
=20
200μs/DIV
VTT
500mV/DIV
VTTR
500mV/DIV
POK2
1V/DIV
STBY#
5V/DIV
I
VTT
=1.5A, I
VTTR
=15mA
50μs/DIV
UGATE
2V/DIV
VDDQ
500mV/DIV
LGATE
2V/DIV
VTT
500mV/DIV
100μs/DIV
VDDQ
1V/DIV
IVDDQ
10A/DIV
VIN
10V/DIV
IIN
5A/DIV
UVP DISABLE, FOLDBACK CURRENT LIMIT
50μs/DIV
VDDQ
1V/DIV
IVDDQ
10A/DIV
VIN
10V/DIV
IIN
5A/DIV
UVP ENABLE
100μs/DIV
VTT
500mV/DIV
IVTT
2A/DIV
ISL88550A
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