参数资料
| 型号： | ISL6225CAZA-T |
| 厂商： | Intersil |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR DDR DRAM, SDRAM 28QSOP |
| 标准包装： | 2,500 |
| 应用： | 控制器，DDR DRAM，SDRAM |
| 输入电压： | 5 V ~ 24 V |
| 输出数： | 2 |
| 输出电压： | 0.9 V ~ 5.5 V |
| 工作温度： | -10°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 28-SSOP/QSOP |
| 包装： | 带卷 (TR) |
ISL6225
Absolute Maximum Ratings
Bias Voltage, V CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V
Input Voltage, V IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +27.0V
PHASE, UGATE Voltage . . . . . . . . . . . . . . GND-5V (Note 3) to 33V
BOOT, ISEN Voltage . . . . . . . . . . . . . . . . . . . . GND-0.3V to +33.0V
BOOT with respect to PHASE . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to V CC + 0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Thermal Information
Thermal Resistance (Typical, Note 4) θ JA (°C/W)
SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
(SSOP - Lead Tips Only)
Recommended Operating Conditions
Bias Voltage, V CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V ± 5%
Input Voltage, V IN . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V to +24.0V
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . .-10°C to 85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . . .-10°C to 125°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
3. 200ns transient.
4. θ JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Noted.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V CC SUPPLY
Bias Current
Shut-down Current
I CC
I CCSN
LGATEx, UGATEx Open, VSENx forced above
regulation point, DDR = 0, VIN > 5V
-
-
2.2
-
3.2
30
mA
μ A
V CC UVLO
Rising V CC Threshold
Falling V CC Threshold
V CCU
V CCD
4.3
4.1
4.65
4.35
4.75
4.45
V
V
V IN
Input Voltage Pin Current (Sink)
Input Voltage Pin Current (Source)
Shut-down Current
I VIN
I VINO
I VINS
10
-
-
-
-15
-
30
-30
1
μ A
μ A
μ A
OSCILLATOR
PWM1 Oscillator Frequency
F C
255
300
345
kHz
Ramp Amplitude, pk-pk
Ramp Amplitude, pk-pk
Ramp Offset
Ramp/V IN Gain
Ramp/V IN Gain
V R1
V R2
V ROFF
G RB1
G RB2
V IN = 16V, by design
V IN = 5V, by design
By design
V IN ≥ 3V, by design
1 ≤ V IN ≤ 3V, by design
-
-
-
-
-
2
1.25
0.5
125
250
-
-
-
-
-
V
V
V
mV/V
mV/V
REFERENCE AND SOFT-START
Internal Reference Voltage
Reference Voltage Accuracy
Soft-Start Current During Start-up
V REF
I SOFT
-
-1.0
-
0.9
-
-5
-
+1.0
-
V
%
μ A
Soft-Start Complete Threshold
V ST
By design
-
1.5
-
V
3
FN9049.7
December 28, 2004
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