参数资料
| 型号： | ISL9444IRZ |
| 厂商： | Intersil |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 40-QFN |
| 标准包装： | 60 |
| 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： | 管件 |
ISL9444
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. (Continued)
MIN
MAX
SYMBOL
PARAMETER
TEST CONDITIONS
(Note 9)
TYP
(Note 9) UNITS
SWITCHING FREQUENCY (Note 9)
F SW
V RT
Switching Frequency
Switching Frequency
Switching Frequency
RT Voltage
R T = 20.5k Ω
R T = 169k Ω
R T = 49.9k Ω
R T = 49.9k Ω
1080
168
540
485
1200
198
600
500
1320
228
660
515
kHz
kHz
kHz
mV
CLOCK OUTPUT AND SYNCHRONIZATION
V CLKH
V CLKL
CLKOUT Output High
CLKOUT Output Low
ISOURCE = 1mA
ISINK = 1mA
VCC_5V - 0.3
0.3
V
V
F CLK
F SYNC
CLKOUT Frequency
SYNC Synchronization Range
R T = VCC_5V
R T = 49.9k Ω
1080
1020
1200
1320
1380
kHz
kHz
LIGHT LOAD EFFICIENCY MODE
V MODETHH
V MODETHL
V CROSS
MODE/SYNC Threshold High
MODE/SYNC Threshold Low
Diode Emulation Phase Threshold (Note 11)
V IN = 12V
1.3
1.1
1.6
1.4
-3
1.9
1.7
V
V
mV
PWM GATE DRIVER (Note 9)
I GSRC
I GSNK
Source Current
Sink Current
800
2000
mA
mA
R UG_UP
R UG_DN
R LG_UP
R LG_DN
t GR
t GF
Upper Drive Pull-Up
Upper Drive Pull-Down
Lower Drive Pull-Up
Lower Drive Pull-Down
Rise Time
Fall Time
VCC_5V = 5.0V
VCC_5V = 5.0V
VCC_5V = 5.0V
VCC_5V = 5.0V
C OUT = 1000pF
C OUT = 1000pF
1.5
1.1
1.5
0.6
8
10
3
2.5
3
1.5
?
?
?
?
ns
ns
OVERVOLTAGE PROTECTION
V OVTH
OV Trip Point
114.5
118.5
123.5
%
OVERCURRENT PROTECTION
I OCSET
Overcurrent Threshold (OCSET_) (Note 10)
Full Scale Input Current (ISEN_) (Note 10)
ROCSET = 55k Ω
32
15
μA
μA
V OCSET
Overcurrent Set Voltage (OCSET_)
1.67
1.74
1.81
V
OVER-TEMPERATURE (Note 9)
T OT-TH
T OT-HYS
Over-Temperature Shutdown
Over-Temperature Hysteresis
150
15
°C
°C
NOTES:
6. In normal operation, where the device is supplied with voltage on the VIN pin, the VCC_5V pin provides a 5V output capable of 75mA (min). When the
VCC_5V pin is connected to external 5V supply, the internal LDO regulator is disabled. The voltage at VCC_5V should not exceed the voltage at VIN at
any time. (Refer to the“Pin Descriptions” on page 2 for more details.)
7. This is the total shutdown current with V IN = 5.6V and 28V.
8. Operating current is the supply current consumed when the device is active but not switching. It does not include gate drive current.
9. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
10. Check Note 6 for VCC_5V and VIN configurations.
11. Threshold voltage at PHASE1, PHASE2 and PHASE3 pins for turning off the bottom MOSFET during DEM.
11
FN7665.3
May 29, 2012
相关PDF资料 |
PDF描述 |
|---|---|
| ISL9491ERZ | IC REG SGL LNB CONTROL 16QFN |
| ISL9492ERZ-T | IC REG SGL LNB CONTROL 28TQFN |
| ISL9506HRZ | IC REG CTRLR BUCK PWM 40-QFN |
| ISL95210IRZ | IC REG BUCK SYNC ADJ 10A 32QFN |
| ISL95870BIRZ | IC CTRLR PWM 1PHASE GPU 20QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL9444IRZS2750 | 制造商:Intersil Corporation 功能描述:PB FREE. ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 4 - Rail/Tube |
| ISL9444IRZ-T | 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL9444IRZ-T7A | 功能描述:软开关 PWM 控制器 ISL9444 TRIPLE STEP DWN PWM CONTRLR RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| ISL9444IRZ-T7AS2750 | 制造商:Intersil Corporation 功能描述:ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 40 LD MLFP - Tape and Reel |
| ISL9444IRZ-TS2750 | 制造商:Intersil Corporation 功能描述:PB FREE. ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 4 - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。