參數(shù)資料
型號: ISL6271ACR
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Integrated XScale Regulator
中文描述: 0.8 A SWITCHING REGULATOR, PQCC20
封裝: 4 X 4 MM, PLASTIC, MO-220-VGGD, QFN-20
文件頁數(shù): 6/16頁
文件大?。?/td> 588K
代理商: ISL6271ACR
6
FN9171.1
I
2
C Vout = 0.85 to 1.6V 5mV/μs, 40μs/DIV
FIGURE 8. TYPICAL I
2
C COMMUNICATION
Top: phase node output voltage ripple, 10mV/DIV
Bottom: Inductor current, 100mA/DIV, 1μs/DIV
FIGURE 9. RIPPLE IN DCM
Ripple in DCM: Fripple = 145kHz, Vin = 2.85V, Vout = 0.85V,
Iout = 10mA Ripple = 10mV (worst case), 1μs/DIV
FIGURE 10. PHASE NODE TO DCM
LDO transient response with 3.3μF output capacitance.
LVCC = 4.1V. 10mA DC load+ 55mA step load.
FIGURE 11. LDO TRANSIENT RESPONSE
Ripple in CCM Vin = 2.85V, Vo = 0.850V, Fripple = 1MHz,
Io = 500mA, Ripple = 4.2mV, 400ns/DIV
FIGURE 12. RIPPLE IN CCM
Soft-start into CCM, VIN = 4.2V, CH3 = EN pin. Vout = 0.85
Soft-Start capacitor = 10nF. 200μs/DIV
FIGURE 13. SOFT-START INTO CCM
Typical Operating Performance
(Continued)
Test results from the Intersil ISL6271A Customer Reference Board (CRB). Output filter on switcher made up of a 4.7μH drumcore with 100m
of
DCR and an output capacitance of 10μF. X5R; Rcomp = 50k
, Vin = 3.6V unless otherwise noted.
DATA
CLK
VOUT
LOAD STEP TRIGGER
VSRAM, 20mV/DIV
OUTPUT VOLTAGE RIPPLE
SOFT PIN
VOUT
EN PIN
ISL6271A
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