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參數(shù)資料
| 型號(hào)： | TPS61251DSG |
| 廠(chǎng)商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 3500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 2 X 2 MM, PLASTIC, WSON-8 |
| 文件頁(yè)數(shù)： | 19/21頁(yè) |
| 文件大?。?/td> | 446K |
| 代理商： | TPS61251DSG |
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0.00001
0.0001
0.001
0.01
0.1
1
I
-OutputCurrent- A
O
V =2.3V
I
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
V =2.7V
I
V =3.3V
I
V =3.6V
I
V =4.2V
I
V
=5V,
I
=max
O
LIM
V =5.5V
I
V =6V
I
0.00001
0.0001
0.001
0.01
0.1
1
I
-OutputCurrent- A
O
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
V
=5V,
I
=max
O
LIM
www.ti.com
SLVSAF7 – SEPTEMBER 2010
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
DESCRIPTION
FIGURE
Efficiency
vs Output current (VOUT = 5.5 V, ILIM = 1.5 A, R1 = 2320 kΩ and R2 = 649 kΩ)
vs Output current in 100% Duty-Cycle Mode (VOUT = 5.5V, ILIM = 1.5 A, R1 = 2320 kΩ
and R2 = 649 k
Ω)
vs Input voltage (VOUT = 5.5V, ILOAD = {0.01;0.1; 1.0; 10; 100; 500 mA}, R1 = 2320 kΩ
and R2 = 649 k
Ω)
vs Input voltage (VOUT = 5.5 V, ILIM = {100; 200; 500; 1000; 1500 mA}, R1 = 1000 kΩ
Maximum output current
and R2 = 280 k
Ω)
Output voltage
vs Output current (VOUT = 5.5 V, ILIM = 1.5 A, R1 = 1000 kΩ and R2 = 280 kΩ)
Load transient response (Tantal Capacitor 2.3mF with >60 m
Ω ESR, VOUT = 5.5V, VIN
= 3.6V, ILIM = 1000mA, Load change from 50 mA to 550 mA)
Load transient response (6 x 330uF Polymer Tantal <5 m
Ω ESR in total, VOUT = 5.5V,
Waveforms
VIN = 3.6V, ILIM = 1000mA, Load change from 500 mA to 1500 mA)
Startup after enable (VOUT = 5.5V, VIN = 3.6V, ILIM = 1000mA)
Startup after enable (VOUT = 5.5V, VIN = 3.6V, ILIM = 500mA)
EFFICIENCY
vs
OUTPUT CURRENT IN 100%
OUTPUT CURRENT
DUTY-CYCLE MODE
Figure 1.
Figure 2.
Copyright 2010, Texas Instruments Incorporated
7
Product Folder Link(s): TPS61251
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