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| 型号： | TPS81256SIPT |
| 厂商： | Texas Instruments |
| 文件页数： | 3/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 5V 0.6A 9USIP |
| 标准包装： | 250 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 4MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 包装： | * |
| 供应商设备封装： | * |
| 其它名称： | 296-34854-2 |
SLVSAZ9A – JUNE 2012 – REVISED AUGUST 2013
THERMAL INFORMATION
TPS8125x
THERMAL METRIC (1) (2)
SIP
9 PINS
UNIT
θ JA
Junction-to-ambient thermal resistance
62
ψ JB
Junction-to-board characterization parameter
31
°C/W
ψ JT
(1)
(2)
Junction-to-case (top) thermal resistance
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953 .
Thermal data have been simulated with high-K board (per JEDEC standard).
RECOMMENDED OPERATING CONDITIONS
MIN
NOM
MAX
UNIT
V I
R L
C EXT
T A
T J
T CASE_IND
T CASE_CAP
Input voltage range
Minimum resistive load for start-up (V I ≤ 4.8V)
Output capacitance
Ambient temperature
Operating junction temperature
Operating inductor case temperature
Operating capacitor case temperature
TPS81256
TPS81256
2.5
65
2
–40
–40
5.5
30
85
125
125
85
V
Ω
μF
°C
°C
°C
°C
ELECTRICAL CHARACTERISTICS
Minimum and maximum values are at V IN = 2.5V to 5.5V, V OUT = 5.0V (or V IN , whichever is higher), EN = 1.8V, T A = –40°C to
85°C; Circuit of Parameter Measurement Information section (unless otherwise noted). Typical values are at V IN = 3.6V, V OUT
= 5.0V, EN = 1.8V, T A = 25°C (unless otherwise noted ).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
Operating quiescent current into V IN
(1)
I OUT = 0mA, V OUT = 5.0V, V IN = 3.6V
30
50
μA
I Q
Operating quiescent current into V OUT
(1)
TPS8125X EN = V IN
Device not switching
7
20
μA
I SD
V UVLO
Shutdown current (1)
Under-voltage lockout threshold
TPS8125x
TPS81256
EN = GND
Falling
Hysteresis
0.85
2.0
0.1
5.0
2.1
μ A
V
V
ENABLE
V IL
Low-level input voltage
0.4
V
V IH
I lkg
High-level input voltage
Input leakage current
TPS8125x
Input connected to GND or V IN
1.0
0.5
V
μA
OUTPUT
2.5V ≤ V IN ≤ 4.85V, I OUT = 0mA
PWM operation. Open Loop
4.92
5
5.08
V
V OUT
Regulated DC output voltage
TPS81256
3.3V ≤ V IN ≤ 4.85V, 0mA ≤ I OUT ≤ 550mA
PFM/PWM operation
4.85
5
5.2
V
2.9V ≤ V IN ≤ 4.85V, 0mA ≤ I OUT ≤ 450mA
PFM/PWM operation
4.85
5
5.2
V
Δ V OUT
Power-save mode output ripple voltage
PWM mode output ripple voltage
TPS81256
PFM operation, I OUT = 1mA
PWM operation, I OUT = 200mA
35
8
mVpk
mVpk
POWER SWITCH
r DS(on)
I lkg
I LIM
Input-to-output On-resistance
Reverse leakage current into VOUT (1)
Average input current limit
Overtemperature protection
Overtemperature hysteresis
TPS8125x
TPS81256
TPS8125x
TPS8125x
V I = 5.25 V. Device not switching
EN = GND
EN = V IN . V IN = 3.3V
320
1180
140
20
5
m ?
μA
mA
°C
°C
(1)
Maximum values can vary over lifetime due to intrinsic capacitor ageing effects. For more details, refer to THERMAL AND RELIABILITY
INFORMATION section.
Copyright ? 2012–2013, Texas Instruments Incorporated
Product Folder Links: TPS81256
3
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