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: 52/53页
文件大小: 1274K
代理商: TPS65023RSBT
SLVS670I – JUNE 2006 – REVISED JULY 2010
www.ti.com
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
VDCDC3 STEP-DOWN CONVERTER
VI
Input voltage range, VINDCDC3
2.5
6
V
DEFDCDC3 = GND
1000
IO
Maximum output current
mA
VINDCDC3 = 3.6 V;
525
3.3V - 1%
≤ VDCDC3 ≤ 3.3V + 1%
I(SD)
Shutdown supply current in VINDCDC3
DCDC3_EN = GND
0.1
1
mA
rDS(on)
P-channel MOSFET on-resistance
VINDCDC3 = V(GS) = 3.6 V
310
698
m
Ilkg
P-channel leakage current
VINDCDC3 = 6 V
0.1
2
mA
rDS(on)
N-channel MOSFET on-resistance
VINDCDC3 = V(GS) = 3.6 V
220
503
m
Ilkg
N-channel leakage current
V(DS) = 6 V
7
10
mA
Forward current limit (P-channel and
2.5 V < VINDCDC3 < 6 V
1.28
1.49
1.69
A
N-channel)
fS
Oscillator frequency
1.95
2.25
2.55
MHz
VINDCDC3 = 2.5 V to 6 V;
VDCDC3 = 1.8V
–2
2
0 mA
≤ IO ≤ 1 A
Fixed output voltage
%
FPWMDCDC3=0
VINDCDC3 = 3.6 V to 6 V;
VDCDC3 = 3.3V
–1
1
0 mA
≤ IO ≤ 1 A
VINDCDC3 = 2.5 V to 6 V;
VDCDC3 = 1.8V
–2
2
0 mA
≤ IO ≤ 1 A
Fixed output voltage
%
FPWMDCDC3=1
VINDCDC3 = 3.6 V to 6 V;
VDCDC3 = 3.3V
–1
1
0 mA
≤ IO ≤ 1 A
Adjustable output voltage with resistor
VINDCDC3 = VDCDC3 + 0.5 V (min 2.5 V) to 6
–2%
2%
divider at DEFDCDC3 FPWMDCDC3=0
V; 0 mA
≤ IO ≤ 800 mA
Adjustable output voltage with resistor
VINDCDC3 = VDCDC3 + 0.5 V (min 2.5 V) to 6
–1%
1%
divider at DEFDCDC3; FPWMDCDC3=1
V; 0 mA
≤ IO ≤ 800 mA
VINDCDC3 = VDCDC3 + 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 L3 to GND
1
M
VDCDC3 discharge resistance
DCDC3 discharge =1
300
8
Copyright 2006–2010, Texas Instruments Incorporated
Product Folder Link(s) : TPS65023, TPS65023B
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