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参数资料
| 型号： | TPS84210RKGT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PQCC39 |
| 封装： | 9 X 11 MM, 2.80 MM HEIGHT, GREEN, PLASTIC, BQFN-39 |
| 文件页数： | 21/26页 |
| 文件大小： | 875K |
| 代理商： | TPS84210RKGT |
SLUSAN7
– SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS
Over -40
°C to 85°C free-air temperature, VIN = 3.3 V, VOUT = 1.8 V, IOUT = 2A,
CIN1 = 47 F ceramic, CIN2 = 220 F poly-tantalum, COUT1 = 47 F ceramic, COUT2 = 100 F poly-tantalum (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IOUT
Output current
TA = 85°C, natural convection
0
2
A
VIN
Input voltage range
Over IOUT range
2.95(1)
6
V
VIN = increasing
3.05
3.135
UVLO
VIN Undervoltage lockout
V
VIN = decreasing
2.5
2.75
VOUT(adj)
Output voltage adjust range
Over IOUT range
0.8
3.6
V
Set-point voltage tolerance
TA = 25°C, IOUT = 0A
±1.0% (2)
Temperature variation
-40
°C ≤ TA ≤ +85°C, IOUT = 0A
±0.3%
VOUT
Line regulation
Over VIN range, TA = 25°C, IOUT = 0A
±0.1%
Load regulation
Over IOUT range, TA = 25°C
±0.1%
Total output voltage variation
Includes set-point, line, load, and temperature variation
±1.5% (2)
VOUT = 3.3V, fSW = 1.5 MHz
95%
VOUT = 2.5V, fSW = 1.5 MHz
93%
VOUT = 1.8V, fSW = 1 MHz
92%
VIN = 5 V
VOUT = 1.5V, fSW = 1 MHz
91%
IO = 1 A
VOUT = 1.2V, fSW =750 kHz
90%
VOUT = 1.0V, fSW = 650 kHz
88%
η
Efficiency
VOUT = 0.8V, fSW = 650 kHz
87%
VIN = 3.3V
VOUT = 1.8V, fSW = 1 MHz
93%
IO = 1 A
VOUT = 1.5V, fSW = 1 MHz
92%
VOUT = 1.2V, fSW = 750 kHz
91%
VOUT = 1.0V, fSW = 650 kHz
89%
VOUT = 0.8V, fSW = 650 kHz
87%
Output voltage ripple
20 MHz bandwith
9
mVPP
ILIM
Overcurrent threshold
3.5
A
Recovery time
80
s
Transient response
1.0 A/
s load step from 0.5A to 1.5A
VOUT
45
mV
over/undershoot
VINH-H
Inhibit High Voltage
1.25
Open (3)
Inhibit Control
V
VINH-L
Inhibit Low Voltage
–0.3
1.0
II(stby)
Input standby current
INH pin to AGND
70
100
A
Good
93%
VOUT rising
Fault
107%
PWRGD Thresholds
Power
Fault
91%
Good
VOUT falling
Good
105%
PWRGD Low Voltage
I(PWRGD) = 0.33 mA
0.3
V
fSW
Switching frequency
Over VIN and IOUT ranges, RT/CLK pin OPEN
400
500
600
kHz
fCLK
Synchronization frequency
500
2000
kHz
VCLK-H
CLK High-Level Threshold
2.2
3.3
V
CLK Control
VCLK-L
CLK Low-Level Threshold
-0.3
0.4
V
CLK_PW CLK Pulse Width
75(4)
ns
Thermal shutdown
175
°C
Thermal Shutdown
Thermal shutdown hysteresis
15
°C
(1)
The minimum VIN voltage is 2.95V or (VOUT + 1.1V) , whichever is greater. A 5V input bus is recommended for output voltages greater
than 2V.
(2)
The stated limit of the set-point voltage tolerance includes the tolerance of both the internal voltage reference and the internal
adjustment resistor. The overall output voltage tolerance will be affected by the tolerance of the external RSET resistor.
(3)
This control pin has an internal pullup. Do not place an external pull-up resistor on this pin. If this pin is left open circuit, the device
operates when input power is applied. A small low-leakage MOSFET is recommended for control. See the application section for further
guidance.
(4)
The maximum synchronization clock pulse width is dependant on VIN, VOUT, and the synchronization frequency. See the
Synchronization (CLK) section for more information.
4
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s): TPS84210
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