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参数资料
| 型号： | TPS65023RSBT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC40 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-40 |
| 文件页数： | 51/53页 |
| 文件大小： | 1274K |
| 代理商： | TPS65023RSBT |
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www.ti.com
SLVS670I – JUNE 2006 – REVISED JULY 2010
ELECTRICAL CHARACTERISTICS
VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6 V, VBACKUP = 3 V, TA = –40°C to 85°C, typical values are
at TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDCDC2 STEP-DOWN CONVERTER
VI
Input voltage range, VINDCDC2
2.5
6
V
DEFDCDC2 = GND
1200
IO
Maximum output current
mA
VINDCDC2 = 3.6 V;
1000
3.3 V - 1%
≤ VDCDC2 ≤ 3.3V + 1%
I(SD)
Shutdown supply current in VINDCDC2
DCDC2_EN = GND
0.1
1
mA
rDS(on)
P-channel MOSFET on-resistance
VINDCDC2 = V(GS) = 3.6 V
140
300
m
Ilkg
P-channel leakage current
VINDCDC2 = 6 V
2
mA
rDS(on)
N-channel MOSFET on-resistance
VINDCDC2 = V(GS) = 3.6 V
150
297
m
Ilkg
N-channel leakage current
V(DS) = 6 V
7
10
mA
Forward current limit (P-channel and
ILIMF
2.5 V < VINDCDC2 < 6 V
1.74
1.94
2.12
A
N-channel)
fS
Oscillator frequency
1.95
2.25
2.55
MHz
VINDCDC2 = 2.5 V to 6 V;
VDCDC2 = 1.8 V
–2
2
0 mA
≤ IO ≤ 1.2 A
Fixed output voltage
%
FPWMDCDC2=0
VINDCDC2 = 3.7 V to 6 V;
VDCDC2 = 3.3 V
–1
1
0 mA
≤ IO ≤ 1.2 A
VINDCDC2 = 2.5 V to 6 V;
VDCDC2 = 1.8 V
–2
2
0 mA
≤ IO ≤ 1.2 A
Fixed output voltage
%
FPWMDCDC2=1
VINDCDC2 = 3.7 V to 6 V;
VDCDC2 = 3.3 V
–1
1
0 mA
≤ IO ≤ 1.2 A
Adjustable output voltage with resistor
VINDCDC2 = VDCDC2 + 0.3 V (min 2.5 V) to 6
–2%
2%
divider at DEFDCDC2 FPWMDCDC2=0
V; 0 mA
≤ IO ≤ 1 A
Adjustable output voltage with resistor
VINDCDC2 = VDCDC2 + 0.3 V (min 2.5 V) to 6
–1%
1%
divider at DEFDCDC2; FPWMDCDC2=1
V; 0 mA
≤ IO ≤ 1 A
VINDCDC2 = VDCDC2 + 0.3 V (min. 2.5 V) to 6
Line Regulation
0
%/V
V; IO = 10 mA
Load Regulation
IO = 10 mA to 1000 mA
0.25
%/A
tStart
Start-up time
Time from active EN to start switching
145
175
200
s
tRamp
VOUT ramp-up time
Time to ramp from 5% to 95% of VOUT
400
750
1000
ms
Internal resistance from L2 to GND
1
M
VDCDC2 discharge resistance
DCDC2 discharge =1
300
Copyright 2006–2010, Texas Instruments Incorporated
7
Product Folder Link(s) : TPS65023, TPS65023B
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