参数资料
| 型号： | ISL6440IA-TK |
| 厂商： | Intersil |
| 文件页数： | 5/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 24-QSOP |
| 标准包装： | 1,000 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 340kHz |
| 占空比： | 93% |
| 电源电压： | 4.5 V ~ 24 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
ISL6440
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
Schematic. V IN = 5.6V to 24V, or VCC5 = 5V ±10%, T A = -40°C to 85°C (Note 3),
Typical values are at T A = 25°C (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER ERROR AMPLIFIERS
DC Gain (Note 7)
Gain-Bandwidth Product (Note 7)
Slew Rate (Note 7)
Maximum Output Voltage (Note 7)
Minimum Output Voltage (Note 7)
80
5.9
-
0.9
-
88
-
2.0
-
-
-
-
-
-
3.6
dB
MHz
V/ μ s
V
V
PWM CONTROLLER GATE DRIVERS (Note 8)
Sink/Source Current
-
400
-
mA
Upper Drive Pull-Up Resistance
Upper Drive Pull-Down Resistance
Lower Drive Pull-Up Resistance
Lower Drive Pull-Down Resistance
VCC5 = 4.5V
VCC5 = 4.5V
VCC5 = 4.5V
VCC5 = 4.5V
-
-
-
-
8
3.2
8
1.8
-
-
-
-
Rise Time
Fall Time
C OUT = 1000pF
C OUT = 1000pF
-
-
18
18
-
-
ns
ns
POWER GOOD AND CONTROL FUNCTIONS
PGOOD LOW Level Voltage
PGOOD Leakage Current
PGOOD Upper Threshold, PWM 1 and 2
PGOOD Lower Threshold, PWM 1 and 2
Pull-up = 100k ?
Fraction of set point
Fraction of set point
-
-
105
80
0.1
-
-
-
0.5
±1.0
120
95
V
μ A
%
%
ISEN and CURRENT LIMIT
Full Scale Input Current (Note 9)
-
32
-
μ A
Overcurrent Threshold (Note 9)
OCSET (Current Limit) Voltage
ROCSET = 110k ?
-
-
64
1.75
-
-
μ A
V
SOFT-START
Soft-Start Current
-
5
-
μ A
PROTECTION
Thermal Shutdown
Rising
Hysteresis
-
-
150
20
-
-
°C
°C
NOTES:
2. Specifications at -40°C and 85°C are guaranteed by design, not production tested.
3. In normal operation, where the device is supplied with voltage on the V IN pin, the VCC_5V pin provides a 5V output capable of 60mA (min).
When the VCC_5V pin is used as a 5V supply input, the internal LDO regulator is disabled and the V IN input pin must be connected to the
VCC_5V pin. (Refer to the Pin Descriptions section for more details.)
4. This is the total shutdown current with VIN = VCC_5V = PVCC = 5V.
5. Operating current is the supply current consumed when the device is active but not switching. It does not include gate drive current.
6. The peak-to-peak sawtooth amplitude is production tested at 12V only; at 5V this parameter is guaranteed by design.
7. Guaranteed by design; not production tested.
8. Not production tested; guaranteed by characterization only.
9. Guaranteed by design. The full scale current of 32μA is recommended for optimum current sample and hold operation. See the Feedback Loop
Compensation Section below.
5
FN9040.2
October 4, 2005
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