T5L1.8F [TOSHIBA]
Step-down DC-DC Converter IC; 降压型DC -DC转换器IC
| 型号： | T5L1.8F |
| 厂家： | 
TOSHIBA |
| 描述： | Step-down DC-DC Converter IC |
| 文件： | 总17页 (文件大小：296K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Toshiba BiCD Integrated Circuit Silicon Monolithic
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Step-down DC-DC Converter IC
The TB7101F is a single-chip step-down DC-DC converter IC.
Equipped with a built-in high-speed and low on-resistance power
MOSFET, and utilizing a synchronous rectifier circuit, this IC can
achieve high efficiency.
Features
• Capable of high current drive (IOUT = maximum of 1 A), using
only a few external components.
SON8-P-0303-0.65A
Weight : 0.017 g (typ.)
• Operating voltage (V ) range: 2.7 to 5.5 V.
IN
• Fixed output voltage : V
= 1.2V / 1.5V / 1.8V / 2.5V / 3.3V(typ.)
OUT
• High oscillation frequency of 1 MHz (typ.), making it possible to use small external components.
• Uses internal phase compensation, achieving high efficiency using only an inductor and two capacitors.
• Built-in current mode architecture with excellent fast load response.
• A small surface-mount type ceramic capacitor can be used as an output smoothing capacitor.
• Housed in a small surface-mount package (PS-8) with a low thermal resistance.
• Built-in undervoltage lock out (U.V.L.O), heatprotection, and overcurrent protection.
Marking (Note 1)/Pin Assignment
8
7
6
5
Type
Output
Type name
1 : PGND
2 : V
voltage(V)
IN
3 : EN
TB7101F(T5L1.2,F)
TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F)
TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
1.2
1.5
1.8
2.5
3.3
7101A
7101B
7101C
7101D
7101E
Type name
Lot No.
4 : SGND
5 : N.C.
6 : N.C.
7 : V
OUT
8 : L
X
1
2
3
4
Note 1: ● on the lower left of the marking indicates Pin 1.
* The Lot number comprises three numerals. The first numeral represents the last digit of the year of
manufacture, and the following two digits indicate the week of manufacture, beginning with 01 and continuing to
either 52 or 53.
Manufacturing week Code
(The first week of the year is 01, continuing up to 52 or 53)
Manufacturing year Code
(Last digit of the year of manufacture)
Due to its MOS structure, this product is sensitive to electrostatic discharge. Handle with care.
1
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
How to Order
Product No.
Package Type and Capacity
TB7101F(T5L*.*,F)
Emboss Taping (3000pcs / reel )
Block Diagram
V
IN
EN
Under voltage lock out
Soft Start
Reference voltage
Current
Detection
+
-
OSCILLATOR
DRIVER
DRIVER
PWM
comparator
Lx
Control
Logic
V
+
OUT
Slope
Compensation
-
PGND
-
VCOMP
Phase
Compensation
+
Heat
Protection
0.8V(TYP.) Error
Amplifier
SGND
Pin Descriptions
Pin No.
Pin Symbol
Pin Description
1
2
PGND
Power ground.
Input pin. This pin is placed in the standby state if V
V
= low. 1 μA or lower operating current.
IN
ENB
Enable pin. This pin is connected to the CMOS inverter. Applying 3.5 V or higher (@ V = 5 V)
IN
3
EN
to this pin causes the internal circuit to start switching control.
Signal ground.
4
5
6
7
8
SGND
N.C.
No connection.
N.C.
No connection.
V
Output voltage pin. Output voltage is set to 1.2V / 1.5V / 1.8V / 2.5V / 3.3V(typ.) internally.
OUT
L
X
Switching pin. This pin is connected to high-side pch MOS FET and low-side nch MOS FET.
2
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Timing Chart
OSC
0
I
OUT
0
0
0
V
OUT
V
COMP
The peak switch current is determined
according to the V
.
COMP
I
L
0
0
V
LX
T
ON
T
Overheat state operation
OSC
0
T
increase
ch
Hysteresis: 25°C (typ.)
T
ch
V
LX
Low Voltage operation
V
IN
Hysteresis: 0.1 V (typ)
0
0
0
OSC
V
LX
OSC
OUT
: Internal oscillator output voltage
: Load current
I
V
V
: Output voltage
OUT
COMP
: Output voltage of error amplifier
I
: Inductor current
L
V
V
: L pin voltage
X
LX
IN
: Input pin voltage
T
ch
: Channel temperature
3
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Absolute Maximum Ratings (Ta = 25°C)
Characteristics
Input voltage
Symbol
Rating
Unit
V
V
-0.3～6
-0.3～6
-0.3～6
-0.3～6
IN
V
V
Switch pin voltage
LX
V
V
Feedback pin voltage
Enable pin voltage
OUT
V
V
EN
-V
V
V
-V <0.3
EN IN
V
Input-enable pin voltage
Power dissipation (Note 1)
Operating temperature
Operating junction temperature
Channel temperature
Storage temperature
EN IN
P
0.7
W
oC
℃
°C
°C
D
Topr
Tjopr
-40～85
-40～125
150
T
ch
T
stg
-55～150
Note 1: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage a
significant change in temperature, etc.) may significantly reduce the reliability of this product
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please consult the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/”Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc) when designing in order to ensure the appropriate reliability.
Thermal Resistance Characteristic
Characteristics
Symbol
Max
Unit
R
178.6 (Note 2)
°C /W
Thermal resistance, channel and ambient
th (ch-a)
(Note 2)
Glass epoxy board
Material: FR-4
25.4 × 25.4 × 0.8
(Unit: mm)
4
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Electrical Characteristics (unless otherwise specified: Tj = 25°C and VIN = 2.7 to 5.5 V)
●TB7101F(T5L1.2,F)
Test
circuit
Characteristics
Symbol
Min
Typ.
Max
Unit
Test condition
-
Operating supply voltage
V
-
-
2.7
-
-
5.5
0.9
V
IN(OPR)
I
V
= 5V, V = 5V, V
= 5V
0.68
mA
IN(1)
IN(2)
IN
EN OUT
Operating current
Standby current
V
V
= 2.7V, V = 2.7V,
EN
=2.7V
IN
OUT
I
-
-
0.55
0.69
mA
I
-
-
-
-
-
-
-
V
V
V
V
V
V
= 5V, V = 0V,V
EN OUT
= 0V
-
3.5
1.89
-
-
-
-
-
-
-
-
1
-
μA
V
IN(STBY)
IN
IN
IN
IN
IN
IN
IN
V
V
= 5V
IH(EN)(1)
IH(EN)(2)
= 2.7V
= 5V
-
V
Enable pin threshold voltage
V
V
1.5
0.81
12.4
6.7
V
IL(EN)(1)
IL(EN)(2)
IH(EN)(1)
IH(EN)(2)
= 2.7V
-
V
I
I
= 5V, V = 5V
EN
7.6
4.1
μA
μA
Enable pin input current
Output voltage
V
V
= 2.7V, V = 2.7V
EN
= 5V, V = 5V
EN
=100mA
IN
V
V
-
-
1.164
1.2
1.2
-
1.236
1.236
14.5
V
V
OUT(1)
OUT(2)
I
OUT
V
=2.7V, V = 2.7V,
IN
EN
1.164
I
=100mA
OUT
V
= V = 2.7V～5.5V
IN
EN
Line regulation
Load regulation
LINE REG
-
-
-
mV
mV
I
=100mA
OUT
V
=5V
IN
-
LOAD REG
-
14.5
I
= 100mA～500mA
OUT
High-side on-state resistance
Low-side on-state resistance
R
-
-
-
-
-
-
-
-
-
-
V
= 5V, V = 5V, I = 0.5A
EN LX
-
0.27
0.27
-
-
Ω
Ω
DS(ON)(H)
IN
IN
IN
IN
IN
IN
IN
IN
R
I
V
V
V
V
V
V
V
= 5V, V = 5V, I = 0.5A
EN LX
-
-
-
DS(ON)(L)
= 5V, V = 0V, V = 0V
EN LX
1
μA
μA
MHz
MHz
ms
ms
V
High-side leakage current
Low-side leakage current
LEAK(H)
I
= 5V, V = 0V, V = 5V
EN LX
-
-
1
1.15
1.15
-
LEAK(L)
f
= 5V, V = 5V
EN
0.85
0.85
1
1
OSC(1)
OSC(2)
Oscillation frequency
Soft start time
f
= 2.7V, V = 2.7V
EN
1
tss
tss
=5V , V =5V, (no load)
EN
2
(1)
(2)
= 2.7V, V = 2.7V, (no load)
EN
1.4
2.2
-
2.4
2.5
0.1
-
V
-
-
2.7
-
Detection
UV
Undervoltage
protection
ΔV
V
Hysteresis
UV
Protection function (reference data)
●TB7101F(T5L1.2,F)
-
-
-
160
20
-
-
oC
oC
TSD
-
-
Detection
Overheat
protection
Hysteresis
ΔTSD
5
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Electrical Characteristics (unless otherwise specified: Tj = 25°C and VIN = 2.7 to 5.5 V)
●TB7101F(T5L1.5,F)
Test
circuit
Characteristics
Symbol
Min
Typ.
Max
Unit
Test condition
-
Operating supply voltage
V
-
-
2.7
-
-
5.5
0.9
V
IN(OPR)
I
V
= 5V, V = 5V, V
= 5V
0.68
mA
IN(1)
IN(2)
IN
EN OUT
Operating current
Standby current
V
V
= 2.7V, V = 2.7V,
EN
=2.7V
IN
OUT
I
-
-
0.55
0.69
mA
I
-
-
-
-
-
-
-
V
V
V
V
V
V
= 5V, V = 0V,V
EN OUT
= 0V
-
3.5
1.89
-
-
-
-
-
-
-
-
1
-
μA
V
IN(STBY)
IN
IN
IN
IN
IN
IN
IN
V
V
= 5V
IH(EN)(1)
IH(EN)(2)
= 2.7V
= 5V
-
V
Enable pin threshold voltage
V
V
1.5
0.81
12.4
6.7
V
IL(EN)(1)
IL(EN)(2)
IH(EN)(1)
IH(EN)(2)
= 2.7V
-
V
I
I
= 5V, V = 5V
EN
7.6
4.1
μA
μA
Enable pin input current
Output voltage
V
V
= 2.7V, V = 2.7V
EN
= 5V, V = 5V
EN
=100mA
IN
V
V
-
-
1.455
1.5
1.5
-
1.545
1.545
18
V
V
OUT(1)
OUT(2)
I
OUT
V
=2.7V, V = 2.7V,
IN
EN
1.455
I
=100mA
OUT
V
= V = 2.7V～5.5V
IN
EN
Line regulation
Load regulation
LINE REG
-
-
-
mV
mV
I
=100mA
OUT
V
=5V
IN
-
LOAD REG
-
18
I
= 100mA～500mA
OUT
High-side on-state resistance
Low-side on-state resistance
R
-
-
-
-
-
-
-
-
-
-
V
= 5V, V = 5V, I = 0.5A
EN LX
-
0.27
0.27
-
-
Ω
Ω
DS(ON)(H)
IN
IN
IN
IN
IN
IN
IN
IN
R
I
V
V
V
V
V
V
V
= 5V, V = 5V, I = 0.5A
EN LX
-
-
-
DS(ON)(L)
= 5V, V = 0V, V = 0V
EN LX
1
μA
μA
MHz
MHz
ms
ms
V
High-side leakage current
Low-side leakage current
LEAK(H)
I
= 5V, V = 0V, V = 5V
EN LX
-
-
1
1.15
1.15
-
LEAK(L)
f
= 5V, V = 5V
EN
0.85
0.85
1
1
OSC(1)
OSC(2)
Oscillation frequency
Soft start time
f
= 2.7V, V = 2.7V
EN
1
tss
tss
=5V , V =5V, (no load)
EN
2
(1)
(2)
= 2.7V, V = 2.7V, (no load)
EN
1.4
2.2
-
2.4
2.5
0.1
-
V
-
-
2.7
-
Detection
UV
Undervoltage
protection
ΔV
V
Hysteresis
UV
Protection function (reference data)
●TB7101F(T5L1.5,F)
-
-
-
160
20
-
-
oC
oC
TSD
-
-
Detection
Overheat
protection
Hysteresis
ΔTSD
6
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Electrical Characteristics (unless otherwise specified: Tj = 25°C and VIN = 2.8 to 5.5 V)
●TB7101F(T5L1.8,F)
Test
circuit
Characteristics
Symbol
Min
Typ.
Max
Unit
Test condition
-
Operating supply voltage
V
-
-
2.8
-
-
5.5
0.9
V
IN(OPR)
I
V
= 5V, V = 5V, V
= 5V
0.68
mA
IN(1)
IN(2)
IN
EN OUT
Operating current
Standby current
V
V
= 2.8V, V = 2.8V,
EN
=2.8V
IN
OUT
I
-
-
0.55
0.69
mA
I
-
-
-
-
-
-
-
V
V
V
V
V
V
= 5V, V = 0V,V
EN OUT
= 0V
-
3.5
1.89
-
-
-
-
-
-
-
-
1
-
μA
V
IN(STBY)
IN
IN
IN
IN
IN
IN
IN
V
V
= 5V
IH(EN)(1)
IH(EN)(2)
= 2.8V
= 5V
-
V
Enable pin threshold voltage
V
V
1.5
0.81
12.4
6.94
V
IL(EN)(1)
IL(EN)(2)
IH(EN)(1)
IH(EN)(2)
= 2.8V
-
V
I
I
= 5V, V = 5V
EN
7.6
4.26
μA
μA
Enable pin input current
Output voltage
V
V
= 2.8V, V = 2.8V
EN
= 5V, V = 5V
EN
=100mA
IN
V
V
-
-
1.746
1.8
1.8
-
1.854
1.854
14.5
V
V
OUT(1)
OUT(2)
I
OUT
V
=2.8V, V = 2.8V,
IN
EN
1.746
I
=100mA
OUT
V
= V = 2.8V～5.5V
IN
EN
Line regulation
Load regulation
LINE REG
-
-
-
mV
mV
I
=100mA
OUT
V
=5V
IN
-
LOAD REG
-
14.5
I
= 100mA～500mA
OUT
High-side on-state resistance
Low-side on-state resistance
R
-
-
-
-
-
-
-
-
-
-
V
= 5V, V = 5V, I = 0.5A
EN LX
-
0.27
0.27
-
-
Ω
Ω
DS(ON)(H)
IN
IN
IN
IN
IN
IN
IN
IN
R
I
V
V
V
V
V
V
V
= 5V, V = 5V, I = 0.5A
EN LX
-
-
-
DS(ON)(L)
= 5V, V = 0V, V = 0V
EN LX
1
μA
μA
MHz
MHz
ms
ms
V
High-side leakage current
Low-side leakage current
LEAK(H)
I
= 5V, V = 0V, V = 5V
EN LX
-
-
1
1.15
1.15
-
LEAK(L)
f
= 5V, V = 5V
EN
0.85
0.85
1
1
OSC(1)
OSC(2)
Oscillation frequency
Soft start time
f
= 2.8V, V = 2.8V
EN
1
tss
tss
=5V , V =5V, (no load)
EN
2
(1)
(2)
= 2.8V, V = 2.8V, (no load)
EN
1.4
2.2
-
2.4
2.5
0.1
-
V
-
-
2.7
-
Detection
UV
Undervoltage
protection
ΔV
V
Hysteresis
UV
Protection function (reference data)
●TB7101F(T5L1.8,F)
-
-
-
160
20
-
-
oC
oC
TSD
-
-
Detection
Overheat
protection
Hysteresis
ΔTSD
7
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Electrical Characteristics (unless otherwise specified: Tj = 25°C and VIN = 3.5 to 5.5 V)
●TB7101F(T5L2.5,F)
Test
circuit
Characteristics
Symbol
Min
Typ.
Max
Unit
Test condition
-
Operating supply voltage
V
-
-
3.5
-
-
5.5
0.9
V
IN(OPR)
I
V
= 5V, V = 5V, V
= 5V
0.68
mA
IN(1)
IN(2)
IN
EN OUT
Operating current
Standby current
V
V
= 3.5V, V = 3.5V,
EN
=3.5V
IN
OUT
I
-
-
0.55
0.705
mA
I
-
-
-
-
-
-
-
V
V
V
V
V
V
= 5V, V = 0V,V
EN OUT
= 0V
-
3.5
2.45
-
-
-
-
-
-
-
-
1
-
μA
V
IN(STBY)
IN
IN
IN
IN
IN
IN
IN
V
V
= 5V
IH(EN)(1)
IH(EN)(2)
= 3.5V
= 5V
-
V
Enable pin threshold voltage
V
V
1.5
1.05
12.4
8.68
V
IL(EN)(1)
IL(EN)(2)
IH(EN)(1)
IH(EN)(2)
= 3.5V
-
V
I
I
= 5V, V = 5V
EN
7.6
5.32
μA
μA
Enable pin input current
Output voltage
V
V
= 2.7V, V = 2.7V
EN
= 5V, V = 5V
EN
=100mA
IN
V
V
-
-
2.425
2.5
2.5
-
2.575
2.575
30
V
V
OUT(1)
OUT(2)
I
OUT
V
=3.5V, V = 3.5V,
IN
EN
2.425
I
=100mA
OUT
V
= V = 3.5V～5.5V
IN
EN
Line regulation
Load regulation
LINE REG
-
-
-
mV
mV
I
=100mA
OUT
V
=5V
IN
-
LOAD REG
-
30
I
= 100mA～500mA
OUT
High-side on-state resistance
Low-side on-state resistance
R
-
-
-
-
-
-
-
-
-
-
V
= 5V, V = 5V, I = 0.5A
EN LX
-
0.27
0.27
-
-
Ω
Ω
DS(ON)(H)
IN
IN
IN
IN
IN
IN
IN
IN
R
I
V
V
V
V
V
V
V
= 5V, V = 5V, I = 0.5A
EN LX
-
-
-
DS(ON)(L)
= 5V, V = 0V, V = 0V
EN LX
1
μA
μA
MHz
MHz
ms
ms
V
High-side leakage current
Low-side leakage current
LEAK(H)
I
= 5V, V = 0V, V = 5V
EN LX
-
-
1
1.15
1.15
-
LEAK(L)
f
= 5V, V = 5V
EN
0.85
0.85
1
1
OSC(1)
OSC(2)
Oscillation frequency
Soft start time
f
= 3.5V, V = 3.5V
EN
1
tss
tss
=5V , V =5V, (no load)
EN
2
(1)
(2)
=3.5V , V =3.5V, (no load)
EN
1.3
2.2
-
2.4
2.5
0.1
-
V
-
-
2.7
-
Detection
UV
Undervoltage
protection
ΔV
V
Hysteresis
UV
Protection function (reference data)
●TB7101F(T5L2.5F)
-
-
-
160
20
-
-
oC
oC
TSD
-
-
Detection
Overheat
protection
Hysteresis
ΔTSD
8
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Electrical Characteristics (unless otherwise specified: Tj = 25°C and VIN = 4.3 to 5.5 V)
●TB7101F(T5L3.3,F)
Test
circuit
Characteristics
Symbol
Min
Typ.
Max
Unit
Test condition
-
Operating supply voltage
V
-
-
4.3
-
-
5.5
0.9
V
IN(OPR)
I
V
= 5V, V = 5V, V
= 5V
0.68
mA
IN(1)
IN(2)
IN
EN OUT
Operating current
Standby current
V
V
= 4.3V, V = 4.3V,
EN
=4.3V
IN
OUT
I
-
-
-
0.775
mA
I
-
-
-
-
-
-
-
V
V
V
V
V
V
= 5V, V = 0V,V
EN OUT
= 0V
-
3.5
3.01
-
-
-
-
-
-
-
-
1
-
μA
V
IN(STBY)
IN
IN
IN
IN
IN
IN
IN
V
V
= 5V
IH(EN)(1)
IH(EN)(2)
= 4.3V
= 5V
-
V
Enable pin threshold voltage
V
V
1.5
V
IL(EN)(1)
IL(EN)(2)
IH(EN)(1)
IH(EN)(2)
=4.3V
-
1.29
12.4
10.66
V
I
I
= 5V, V = 5V
EN
7.6
6.54
μA
μA
Enable pin input current
Output voltage
V
V
= 2.7V, V = 2.7V
EN
= 5V, V = 5V
EN
=100mA
IN
V
V
-
-
1.164
1.2
1.2
-
1.236
1.236
40
V
V
OUT(1)
OUT(2)
I
OUT
V
=4.3V, V = 4.3V,
IN
EN
1.164
I
=100mA
OUT
V
= V = 4.3V～5.5V
IN
EN
Line regulation
Load regulation
LINE REG
-
-
-
mV
mV
I
=100mA
OUT
V
=5V
IN
-
LOAD REG
-
40
I
= 100mA～500mA
OUT
High-side on-state resistance
Low-side on-state resistance
R
-
-
-
-
-
-
-
-
-
-
V
= 5V, V = 5V, I = 0.5A
EN LX
-
0.27
0.27
-
-
Ω
Ω
DS(ON)(H)
IN
IN
IN
IN
IN
IN
IN
IN
R
I
V
V
V
V
V
V
V
= 5V, V = 5V, I = 0.5A
EN LX
-
-
-
DS(ON)(L)
= 5V, V = 0V, V = 0V
EN LX
1
μA
μA
MHz
MHz
ms
ms
V
High-side leakage current
Low-side leakage current
LEAK(H)
I
= 5V, V = 0V, V = 5V
EN LX
-
-
1
1.15
1.15
-
LEAK(L)
f
= 5V, V = 5V
EN
0.85
0.85
1
1
OSC(1)
OSC(2)
Oscillation frequency
Soft start time
f
= 4.3V, V = 4.3V
EN
1
tss
tss
=5V , V =5V, (no load)
EN
2
(1)
(2)
=4.3V , V =4.3V, (no load)
EN
1.2
2.2
-
2.4
2.5
0.1
-
V
-
-
2.7
-
Detection
UV
Undervoltage
protection
ΔV
V
Hysteresis
UV
Protection function (reference data)
●TB7101F(T5L3.3,F)
-
-
-
160
20
-
-
oC
oC
TSD
-
-
Detection
Overheat
protection
Hysteresis
ΔTSD
9
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Electrical Characteristics Common to All Products
When a pulse test is carried out, Tj = 25°C is the standard condition in the measurements for each item.
Any drift in the electrical characteristic due to a rise in the junction temperature of the chip may be disregarded.
Application Circuit Example
V
IN
V
EN
IN
V
OUT
TB7101F(T5L*.*,F)
L
V
OUT
LX
C
IN
SGND
PGND
C
OUT
GND
GND
Figure 1: TB7101F application circuit example
Component constants
The following values are given only for your reference and may need tuning depending on your input/output conditions and board
layout.
C
: Input smoothing capacitance of 10 μF
IN
(multilayer ceramic capacitor JMK212BJ106KG, manufactured by Taiyo Yuden Co., Ltd.)
C : Output smoothing capacitance of 10 μF
OUT
(multilayer ceramic capacitor JMK212BJ106KG manufactured by Taiyo Yuden Co., Ltd.)
L: Inductor3.3 μH (@ V = 5 V, V
IN
= 3.3 V); CDRH4D28C/LD series, manufactured by Sumida Corporation
OUT
How to use
Setting the Inductance
The required inductance can be calculated by using the following equation:
VIN −VOUT VOUT
fOSC ⋅ ΔIL VIN
L =
⋅
… (1)
VIN: Input voltage (V)
fOSC: Oscillation frequency (Hz)
VOUT: Output voltage (V)
ΔIL: Inductor ripple current (A)
* Generally, ΔIL should be set to 30% to 40% of the maximum output current. For the TB7101F, set ΔIL to 0.3 A, as its
maximum current [ILX(MAX)] is 1 A (min). Therefore select an inductor whose current rating is no lower than the
peak switch current [1.15 A (min)] of the TB7101F. If the current rating is exceeded, the inductor becomes
saturated, leading to an unstable DC-DC converter operation.
If VIN = 5 V and VOUT = 3.3 V, the required inductance can be calculated as below. Be sure to select an inductor
with an optimum constant by taking VIN variations into consideration.
10
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
VIN −VOUT VOUT
fOSC ⋅ ΔIL VIN
ΔIL
L =
⋅
IL
5V − 3.3V
1MHz ⋅300mA 5V
= 3.7μH
3.3V
0
=
⋅
1
VOUT
TON = T ⋅
VIN
T =
f
OSC
Figure 2: Inductor current waveform
Output capacitor
The capacitance of the output ceramic capacitor is greatly affected by temperature. Select a product whose
temperature characteristics (such as B-characteristic) are excellent. The capacitance value should be to more than 10μF,
and set to an optimum value by, for example, enlarging the output capacitor when there is instability under use
conditions ,or when there is a large ripple voltage or drop in output voltage under heavy loads. Ceramic capacitors can
be used to achieve low output ripple, though it is more difficult to achieve phase compensation with ceramic capacitors
because the equivalent series resistance (ESR) of ceramic capacitors is lower. For this reason, perform a careful
evaluation when using ceramic capacitors.
Precautions
• Please select parts after confirming the actual operation in the customer set and considering the input voltage the
output voltage, the output current, the temperature, the characteristics or the kind of capacitor, and the inductor.
• If the voltage between the input and output is low, the influence of the on-state voltage of the switch power
MOSFET is greater, causing the voltage across the inductor to decrease. For this reason, it may become
impossible for the required inductor current to flow, resulting in lower performance or unstable operation of the
DC-DC converter. As a rough standard, keep the input-output voltage potential difference at or above 1 V, taking
the on-state voltage of the power MOSFET into consideration.
• The lowest output voltage that can be set is 0.8 V (typ.).
• There is an antistatic diode between the ENB and VIN pins. The voltage between the ENB and VIN pins should
satisfy the rating VENB - VIN < 0.3 V
• If operation becomes unstable due to switching noise under a heavy load, please mount a by-pass capacitor Ccc
between the SGND pin and the VIN pin.
11
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Characteristic data
V
– I
OUT
V
– I
OUT OUT
OUT
3.399
3.366
3.333
3.3
2.575
2.550
2.525
2.5
VIN=5.0 V
VIN=5.0 V
3.267
3.234
3.201
2.475
2.450
2.425
TB7101F(T5L3.3,F)
TB7101F(T5L2.5,F)
Ta = 25°C
Ta = 25°C
0.001
0.01
0.1
1
0.001
0.01
0.1
1
Load Current
I
(A)
Load Current
I
(A)
OUT
OUT
V
– I
OUT
V
– I
OUT OUT
OUT
1.854
1.836
1.818
1.8
1.854
1.836
1.818
1.8
VIN=5.0 V
VIN=3.3 V
1.782
1.764
1.746
1.782
1.764
1.746
TB7101F(T5L1.8,F)
TB7101F(T5L1.8,F)
Ta = 25°C
Ta = 25°C
0.001
0.01
0.1
1
0.001
0.01
0.1
1
Load Current
I
(A)
Load Current
I
(A)
OUT
OUT
V
– I
OUT
OUT
V
– I
OUT
OUT
1.545
1.545
1.53
1.53
1.515
1.5
VIN=3.3 V
1.515
1.5
VIN=5.0 V
1.485
1.47
1.485
1.47
TB7101F(T5L1.5,F)
TB7101F(T5L1.5,F)
Ta = 25°C
Ta = 25°C
1.455
1.455
0.001
0.01
0.1
1
0.001
0.01
0.1
1
Load Current
I
(A)
OUT
Load Current
I
(A)
OUT
12
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
V
– I
OUT
V
– I
OUT OUT
OUT
1.236
1.224
1.212
1.2
1.236
1.224
1.212
1.2
VIN=5.0 V
VIN=3.3V
1.188
1.176
1.164
1.188
1.176
1.164
TB7101F(T5L1.2,F)
TB7101F(T5L1.2,F)
Ta = 25°C
Ta = 25°C
0.001
0.01
0.1
1
0.001
0.01
0.1
1
Load Current
I
(A)
Load Current
I
(A)
OUT
OUT
V
– V
V
– V
OUT IN
OUT
IN
3.399
3.366
3.333
3.3
2.575
2.55
IOUT = 0.2A
2.525
2.5
IOUT = 0.2A
3.267
3.234
3.201
2.475
2.45
TB7101F(T5L3.3,F)
TB7101F(T5L2.5,F)
Ta = 25°C
Ta = 25°C
2.425
2
3
4
5
6
2
3
4
5
6
Input Voltage
V
IN
(V)
Input Voltage
V
IN
(V)
V
– V
IN
OUT
V
– V
IN
OUT
1.854
1.545
1.836
1.818
1.8
1.53
IOUT = 0.2A
IOUT = 0.2A
1.515
1.5
1.485
1.47
1.782
1.764
1.746
TB7101F(T5L1.8,F)
TB7101F(T5L1.5,F)
Ta = 25°C
Ta = 25°C
1.455
2
3
4
5
6
2
3
4
5
6
Input Voltage
V
IN
(V)
Input Voltage
V
IN
(V)
13
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
V
– V
IN
OUT
1.236
1.224
1.212
1.2
IOUT = 0.2A
1.188
1.176
1.164
TB7101F(T5L1.2,F)
Ta = 25°C
2
3
4
5
6
Input Voltage
V
IN
(V)
η – I
η – I
OUT
OUT
100
100
80
80
VIN = 5.0V
VIN = 5.0V
60
40
20
60
40
20
TB7101F(T5L3.3,F)
TB7101F(T5L2.5,F)
Ta = 25°C
Ta = 25°C
0
0
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
Load Current
I
(A)
OUT
Load Current
I
(A)
OUT
η – I
OUT
η – I
OUT
100
100
80
80
60
VIN = 3.3V
VIN = 5.0V
60
40
40
20
20
0
TB7101F(T5L1.8,F)
TB7101F(T5L1.8,F)
Ta = 25°C
Ta = 25°C
0
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
Load Current
I
(A)
OUT
Load Current
I
(A)
OUT
14
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
η – I
OUT
η – I
OUT
100
100
80
60
80
60
VIN =5.0V
VIN =3.3V
40
20
40
20
TB7101F(T5L1.5,F)
TB7101F(T5L1.5,F)
Ta = 25°C
Ta = 25°C
0
0
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
Load Current
I
(A)
OUT
Load Current
I
(A)
OUT
η – I
OUT
η – I
OUT
100
100
80
80
60
VIN =5.0V
VIN =3.3V
60
40
20
40
20
TB7101F(T5L1.2,F)
TB7101F(T5L1.2,F)
Ta = 25°C
Ta = 25°C
0
0
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
Load Current
I
(A)
OUT
Load Current
I
(A)
OUT
15
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
Package dimensions
SON8-P-0303-0.65A
Unit: mm
8
5
0.1 max
1
4
0.17
± 0.02
B
0.33
± 0.05
0.05 M
A
0.05 M
B
0.475
0.65
2.9
± 0.1
A
S
0.025
S
Weight: 0.017 g (Typ.)
16
2007-09-06
TB7101F(T5L1.2,F) , TB7101F(T5L1.5,F)
TB7101F(T5L1.8,F) , TB7101F(T5L2.5,F)
TB7101F(T5L3.3,F)
RESTRICTIONS ON PRODUCT USE
20070701-EN
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
• The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
• Please contact your sales representative for product-by-product details in this document regarding RoHS
compatibility. Please use these products in this document in compliance with all applicable laws and regulations
that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
occurring as a result of noncompliance with applicable laws and regulations.
17
2007-09-06
相关型号：
T5V0S5-7
Trans Voltage Suppressor Diode, 260W, 5V V(RWM), Unidirectional, 1 Element, Silicon, GREEN, ULTRA SMALL, PLASTIC PACKAGE-2
DIODES
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