ISL6227IAZ-T Intersil, ISL6227IAZ-T Datasheet - Page 12

• Manufacturer Part Number: ISL6227IAZ-T
• Description: IC CONTROLLER DDR, DDR2 28QSOP
• Manufacturer: Intersil

Specifications of ISL6227IAZ-T

• Applications: Controller, DDR, DDR2
• Voltage - Input: 5 ~ 28 V
• Number Of Outputs: 2
• Voltage - Output: 0.9 ~ 5.5 V
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

0.01µ F
0.01 F
Cfb1
Cfb1
V1 (2.5V)
0.01 F
VDDQ (2.5V)
VDDQ (2.5V)
Cfb1
FIGURE 32. TYPICAL APPLICATION AS DDR MEMORY POWER SUPPLY, VDDQ = 2.5V, VTT = 1.25V
µ
FIGURE 31. TYPICAL APPLICATION CIRCUIT AS DUAL SWITCHER, VOUT1 = 2.5V, VOUT = 1.8V
Rfb11
17.8k
17.8k
Rfb1
Rfb1
Rfb12
Rfb12
10k
10k
Rfb12
Rfb12
10K
12
Co11
220 F
220 F
Co13
Co13
220 F
220 F
µ
µ
V
Lo1
Lo1
4.6µ H
4.6 H
IN
Vin
Vin
Cin1
Cin1
10 F
10 F
Co12
4.7 F
Cin1
Cin1
10 F
10 F
Co11
Co11
4.7 F
4.7 F
µ
µ
µ
µ
4.7µH
Lo1
Csoft1
Csoft1
0.01 F
0.01 F
Csoft1
0.01µF
FDS6912A
FDS6912A
FDS6912A
FDS6912A
µ
BAT54W
Cbt1
Cb
0.15µF
BAT54W
Cbt1
0.15µF
Q1
Q1
Q1
Q1
D1
D1
Cdc
Cdc
4.7µF
Cdc
Cdc
4.7 F
4.7 F
Rs1
Rs1
2.0k
Rs1
2.0k
Rset1
100k
Rset1
100k
Rbt1
µ
0Ω
0Ω
Rbt1
ISL6227
GND
LGATE1
GND
BOOT1
UGATE1
PHASE1
ISEN1
LGATE1
PGND1
VOUT1
VSEN1
PG1
EN1
SOFT1
OCSET1
BOOT1
UGATE1
PHASE1
ISEN1
PGND1
VOUT1
VSEN1
PG1
EN1
SOFT1
OCSET1
VIN
VIN
VIN
ISL6227
ISL6227
VCC
U1
U1
U1
U1
VCC
VCC
PG2_REF
PG2_REF
UGATE2
PHASE2
UGATE2
PHASE2
OCSET2
LGATE2
LGATE2
LGATE2
BOOT2
PGND2
PGND2
BOOT2
PGND2
VOUT2
VOUT2
VSEN2
VSEN2
SOFT2
SOFT2
VOUT2
VSEN2
SOFT2
ISEN2
ISEN2
DDR
DDR
DDR
EN2
EN2
PG2
EN2
100k
Rset2
OCSET2_VDDQ/2
Rs2
1.0k
Rs2
2.0k
Rbt2
Rbt2
0Ω
0Ω
Csoft2 (N/U)
BAT54W
BAT54W
0.01µF
Cbt2
0.15µF
Cbt2
Cbt2
0.15µF
D2
FDS6912A
FDS6912A
FDS6912A
D2
Q2
Q2
Q2
Q2
Csoft2
0.01µF
VDDQ
Cf
Cf
0.1
0.1µF
Cref
4.7µF
1.5
1.5µH
Lo2
Lo2
4.7µH
Lo2
Vref
220µF
Co21
220 µF
Co21
Co21
10µF
(VDDQ/2)
Cin2
Cin2
Cin2
4.7µF
VCC (5V)
VCC (5V)
VCC (5V)
VCC (5V)
Rd1
10k
Rd2
10k
VDDQ/2
4.7 µF
Co22
10k
10k
Rfb21
Rfb22
VTT (1.25V)
VDDQ
V2 (1.8V)
V
Co22
4.7µF
Cfb2
0.01µF
May 4, 2009
FN9094.7