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参数资料
| 型号： | ISL8022IRZ |
| 厂商： | Intersil |
| 文件页数： | 6/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ DL 12DFN |
| 标准包装： | 75 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.6 V ~ 5.5 V |
| 输入电压： | 2.8 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2.25MHz |
| 电流 - 输出： | 2A，1.7A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-VFDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 12-DFN（4x3） |
ISL8022
Electrical Specifications Unless otherwise noted, all parameter limits are established over the recommended operating
conditions: T A = -40°C to +85°C, V IN = 2.8V to 5.5V, EN1 = EN2 = V IN , SYNC = 0V, L = 1.2μH, C1 = 2 x 10μF, C2 = C4 = 22μF, I OUT1 = 0A to 2A,
I OUT2 = 0A to 1.7A. (Typical values are at T A = +25°C, V IN = 3.6V). Boldface limits apply over the operating temperature range, -40°C to +85°C.
MIN
MAX
PARAMETER
Negative Current Limit
SYMBOL
I valley1
I valley2
TEST CONDITIONS
(Note 6)
-2.2
-2.2
TYP
-1.6
-1.6
(Note 6)
-1
-1
UNITS
A
A
LX1, LX2
P-Channel MOSFET ON-Resistance
N-Channel MOSFET ON-Resistance
LX_ Maximum Duty Cycle
V IN = 5.5V, I O = 200mA Channel 1
V IN = 5.5V, I O = 200mA Channel 2
V IN = 5.5V, I O = 200mA Channel 1
V IN = 5.5V, I O = 200mA Channel 2
90
100
80
90
100
115
125
103
112
m Ω
m Ω
m Ω
m Ω
%
PWM Switching Frequency
Synchronization Range
Channel 1 to Channel 2 Phase Shift
LX Minimum On Time
F S
(Note 7)
Rising edge to rising edge timing
SYNC = High (forced PWM mode)
1.8
5.4
2.25
180
65
2.7
8
MHz
MHz
°
ns
Soft Discharge Resistance
R DIS_
EN = LOW
80
100
130
Ω
PG
Output Low Voltage
Sinking 1mA, VFB = 0.5V
0.4
V
PG Pin Leakage Current
PG Pull-up Resistor
PG = V IN = 3.6V
0.01
1
0.1
μA
M Ω
Internal PGOOD Low Rising Threshold
Internal PGOOD Low Falling Threshold
Percentage of nominal regulation voltage
Percentage of nominal regulation voltage
85
78
91
85
97
92
%
%
Delay Time (Rising Edge)
0.76
ms
Internal PGOOD Delay Time (Falling Edge)
2
4
μs
EN1, EN2, SYNC
Logic Input Low
Logic Input High
1.4
0.4
V
V
SYNC Logic Input Leakage Current
Enable Logic Input Leakage Current
I SYNC
I EN_
Pulled up to 5.5V
0.1
0.1
1
1
μA
μA
Thermal Shutdown
Thermal Shutdown Hysteresis
150
25
°C
°C
NOTES:
6. 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.
7. The operational frequency per switching channel will be half of the SYNC frequency.
6
FN7650.3
March 14, 2013
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