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参数资料
| 型号： | ISL9444IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 9/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 40-QFN |
| 标准包装： | 6,000 |
| PWM 型： | 电流模式 |
| 输出数： | 3 |
| 频率 - 最大： | 1.32MHz |
| 电源电压： | 4.5 V ~ 28 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： | 40-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
ISL9444
Absolute Maximum Ratings
VCC_5V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.2V
EXTBIAS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC_5V+0.3V
VIN to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +30V
BOOT1,2,3/UGATE1,2,3 to PHASE1,2,3 . . . . . . . . . -0.3V to VCC_5V+0.3V
PHASE1,2,3 and
ISEN1, 2,3, to GND . . . . . . . . . . . -5V (<100ns, 10μJ)/-0.3V (DC) to +30V
EN/SS1, EN2, EN3, FB1, FB2, FB3, to GND . . . . . . -0.3V to VCC_5V+0.3V
OCSET1, OCSET2, OCSET3, PG3_DLY, TKSS2, TKSS3, CLKOUT,
LGATE1, LGATE2, LGATE3, to GND . . . . . . . . . . . . -0.3V to VCC_5V+0.3V
RT, MODE/SYNC to GND . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC_5V+0.3V
PFI, PFO, PGOOD1, 2, 3, to GND. . . . . . . . . . . . . . . . -0.3V to VCC_5V+0.3V
VCC_5V Short Circuit to GND Duration. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1s
ESD Rating
Thermal Information
Thermal Resistance (Typical) θ JA (°C/W) θ JC (°C/W)
40 Ld QFN Package (Notes 4, 5) . . . . . . . . 30 2.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . .-55°C to +150°C
Maximum Operating Temperature . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Maximum Storage Temperature. . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 28V
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . 3000V
Machine Model (Tested per JESD22-115-C) . . . . . . . . . . . . . . . . . . . 200V
Charge Device Model (Tested per JESD22-C110D) . . . . . . . . . . . . 2000V
Latch Up (Tested per JESD78C; Class II, Level A, +85°C) . . . . . . . . 100mA
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. θ JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
5. For θ JC , the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram on page 5 and Typical
Application Schematics on pages 6 and 7. V IN = 5.0V to 28V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7μF, T A = -40°C to +85°C, Typical values are at
T A = +25°C, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
MIN
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
(Note 9)
TYP
(Note 9) UNITS
V IN SUPPLY
V IN
Input Voltage Range
4.5
12.0
28.0
V
V IN SUPPLY CURRENT
I VINQ
I VINOP
Shutdown Current (Note 7)
Operating Current (Note 8)
EN/SS1 = EN2 = EN3 = 0
PGOODx are floating
PGOOD1, PGOOD2, PGOOD3 are floating
32
5
40
6
μA
mA
VCC_5V SUPPLY (Note 6)
V CC
I VCC_MAX
Operation Voltage
Internal LDO Output Voltage
Internal LDO Output Voltage
Maximum Supply Current of Internal LDO
V IN = 12V, I L = 0mA
V IN = 4.5V, I L = 30mA
V IN > 5.6V, I L = 75mA
V VCC_5V = 0V, V IN = 12V
5.1
4.05
4.5
5.4
4.35
5.4
150
5.7
250
V
V
V
mA
EXTBIAS SUPPLY (Note 6)
V EXT_THR
V EXT_THF
R EXT
Switch Over Threshold Voltage, Rising
Switch Over Threshold Voltage, Falling
Internal Switch On Resistance
EXTBIAS Voltage
EXTBIAS Voltage
V IN = 12V
4.5
4.35
4.7
4.5
0.5
4.9
4.65
1.0
V
V
Ω
UNDERVOLTAGE LOCKOUT
V UVLOTHR
V UVLOTHF
Undervoltage Lockout, Rising
Undervoltage Lockout, Falling
VCC_5V Voltage
VCC_5V Voltage
3.4
3.05
3.95
3.60
4.45
4.15
V
V
EN/SS1, EN2, EN3 THRESHOLD
V ENSS_TH
V EN_THR
V EN_THF
EN/SS1 THRESHOLD
EN2, EN3 Logic Threshold, Rising
EN2, EN3 Logic Threshold, Falling
1.10
1.40
1.10
1.30
1.7
1.25
1.5
2.00
1.40
V
V
V
9
FN7665.3
May 29, 2012
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