参数资料
型号: MAX8798EVCMAXQU+
厂商: Maxim Integrated Products
文件页数: 9/31页
文件大小: 0K
描述: KIT EVAL FOR MAX8798
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 特殊用途 DC/DC,LCD 电源
输出及类型: 4,非隔离
功率 - 输出: 3.56W
输出电压: 8V,3.2V,21V,-13V
电流 - 输出: 300mA,150mA,20mA,20mA
输入电压: 1.8 ~ 6 V
稳压器拓扑结构: 升压
频率 - 开关: 1.2MHz
板类型: 完全填充
已供物品: 2 板,CD
已用 IC / 零件: MAX8798
Internal-Switch Boost Regulator with
Integrated 3-Channel Scan Driver for TFT LCDs
Typical Operating Characteristics
(Circuit of Figure 2, V IN = 3V, T A = +25°C, unless otherwise noted.)
100
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT
0.2
STEP-UP REGULATOR OUTPUT
LOAD REGULATION vs. LOAD CURRENT
80
IN SUPPLY QUIESCENT CURRENT
vs. IN SUPPLY VOLTAGE
90
V IN = 5.0V
0
70
80
70
V IN = 3.0V
V IN = 2.2V
-0.2
-0.4
V IN = 5.0V
V IN = 3.0V
V IN = 2.2V
60
50
40
0.2A
60
-0.6
30
20
50
40
-0.8
-1.0
10
0
NO LOAD
1
10
100
1000
1
10
100
1000
1.6
2.7
3.8
4.9
6.0
LOAD CURRENT (mA)
STEP-UP REGULATOR SUPPLY CURRENT
vs. TEMPERATURE
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
STEP-UP CONVERTER SWITCHING
FREQUENCY vs. INPUT VOLTAGE
3.0
2.5
2.0
1.5
1.0
0.5
0
I BOOST
MAX17088 toc04
I IN
40
35
30
25
20
15
10
5
0
1.20
1.19
1.18
1.17
1.16
1.15
1.14
1.13
1.12
1.11
1.10
200mA LOAD
-40
-15
10
35
60
85
1.6
2.7
3.8
4.9
6.0
TEMPERATURE ( ° C)
STEP-UP REGULATOR
HEAVY-LOAD SOFT-START
MAX8798 toc06
2ms/div
LX
5V/div
0V
V MAIN
5V/div
0V
I L
500mA/div
0A
SHDN CONTROL
5V/div
0V
INPUT VOLTAGE (V)
STEP-UP REGULATOR LOAD TRANSIENT
RESPONSE (20mA TO 300mA)
MAX8798 toc07
100 μ s/div
L = 3.6 μ H
R COMP = 100k Ω
C COMP1 = 220pF
V LX
10V/div
0V
I L
1A/div
0A
0mV
V MAIN (AC-COUPLED)
200mV/div
LOAD CURRENT
200mA/div
0mA
_______________________________________________________________________________________
9
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