参数资料
型号: MAX1889ETE+T
厂商: Maxim Integrated Products
文件页数: 6/32页
文件大小: 0K
描述: IC PWR SUP TRPL LCD 16-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 控制器,TFT LCD
输入电压: 2.7 V ~ 5.5 V
输出数: 3
输出电压: 2.7 V ~ 13 V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-WQFN 裸露焊盘
供应商设备封装: 16-TQFN-EP(5x5)
包装: 带卷 (TR)
Triple-Output TFT LCD Power Supply
with Fault Protection
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V IN = +3.3V, V MAIN = +9V, V PL = +20V, V NL = -7V, SHDN = FREQ = IN, PGND = GND, T A = +25 ° C, unless
otherwise noted.)
13.1
13.0
12.9
STEP-UP REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT (V MAIN = 13V)
1100
1000
900
STEP-UP REGULATOR SWITCHING
FREQUENCY vs. INPUT VOLTAGE
A
STEP-UP REGULATOR LOAD-TRANSIENT
RESPONSE (0 TO 200mA)
MAX1889 toc06
1A
500mA
0
12.8
V IN = 2.7V
800
12.7
V IN = 3.3V
V IN = 5.5V
700
V IN = 3.3V
V MAIN = 9V
I MAIN = 200mA
B
9V
8.9V
12.6
12.5
600
500
C
200mA
0
1
10
100
1000
2.5
3.0
3.5
4.0
4.5
5.0
5.5
10 μ s/div
LOAD CURRENT (mA)
STEP-UP REGULATOR LOAD-TRANSIENT
INPUT VOLTAGE (V)
STEP-UP REGULATOR SOFT-START
(10mA LOAD) FROM
A: INDUCTOR CURRENT, 500mA/div
B: V MAIN = 9V, 100mV/div, AC-COUPLED
C: I MAIN = 0 TO 200mA, 200mA/div
STEP-UP REGULATOR SOFT-START
(200mA LOAD) FROM
RESPONSE (0 TO 1A, 2 μ s PULSE)
MAX1889 toc07
2A
A
SLOW-RISING INPUT SUPPLY
MAX1889 toc08
5V
A
SLOW-RISING INPUT SUPPLY
MAX1889 toc09
5V
1A
0
0
A
0
5V
5V
9V
B
0
5V
B
0
5V
B
8.9V
C
0
C
0
8.8V
1A
10V
5V
10V
5V
C
0
D
0
D
0
10 μ s/div
A: INDUCTOR CURRENT, 1A/div
B: V MAIN = 9V, 100mV/div, AC-COUPLED
C: I MAIN = 0 TO 1A, 1A/div
1ms/div
A: V IN , 5V/div
B: V GATE , 5V/div
C: V C2 , 5V/div
D: V MAIN = 9V, 5V/div
1ms/div
A: V IN , 5V/div
B: V GATE , 5V/div
C: V C2 , 5V/div
D: V MAIN = 9V, 5V/div
6
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