參數(shù)資料
型號(hào)： LP3923TLX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
封裝： 3 X 2.50 MM, MICRO SMD-30
文件頁(yè)數(shù)： 3/32頁(yè)
文件大?。?/td> 1718K
代理商： LP3923TLX
LDO8 (D-Type) Electrical Characteristics
Unless otherwise noted, V
IN=VIN2=BATT=3.6V, GND = 0V, CV!N1-2 = 10 F, CLDOx= 1 F. Note VINMIN is the greater of 3.0V or
V
OUT +0.5V. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over
the entire junction temperature range for operation, T
A = TJ = 40°C to +125°C. (Note 6)
Symbol
Parameter
Conditions
Typical
Limit
Units
Min
Max
V
OUT
Output Voltage
Accuracy
I
OUT = 1 mA, VOUT = 3.0V
2
+2
%
3
+3
Default Output Voltage
3.0
I
OUT
Output Current
V
INMIN ≤ VIN ≤ 5.5V
150
mA
Output Current Limit
V
OUT = 0V
400
V
DO
Dropout Voltage
I
OUT = 150 mA (Note 7, Note 8)
125
140
mV
ΔV
OUT
Line Regulation
V
INMIN ≤ VIN ≤ 5.5V, IOUT = 1 mA
2
mV
Load Regulation
1 mA
≤ I
OUT ≤ 150 mA
5
e
N
Output Noise Voltage
10 Hz
≤ f ≤ 100 kHz, C
OUT = 1 F (Note 7)
35
V
RMS
PSRR
Power Supply Ripple
Rejection Ratio
F = 10 kHz, C
OUT = 1 F, IOUT = 20 mA (Note 7)
60
dB
t
START-UP
Start-Up Time from
Shut-down
C
OUT = 1 F, IOUT = 150 mA (Note 7)
35
s
T
Transient
Start-Up Transient
Overshoot
C
OUT = 1 F, IOUT = 150 mA (Note 7)
30
mV
Buck Converter Electrical Characteristics
Unless otherwise noted, VIN = VINB = 3.6V, GND = 0V, C
VINB = 10 F. Typical values and limits appearing in normal type apply
for T
J = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, TA = TJ = 40°C
to +125°C. (Note 6, Note 11)
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
Max
V
FB
Feedback Voltage (BUCK)
3.0V
≤V
IN≤ 5.5V
0.5
0.485
0.515
V
OUT,PWM
Output Voltage
3.0V
≤V
IN≤ 5.5V, IOUT = 150mA
External resistor divider accuracy
not considered.
R
FB1=390k RFB2=150k (Note 7)
1.8
1.746
1.854
V
OUT,PFM
Output Voltage regulation in
PFM mode relative to regulation
in PWM mode
1.5
%
V
OUT
Line Regulation
3.0V
≤ V
IN ≤ 5.5V, IOUT = 10 mA
0.14
%/V
Load Regulation
100 mA
≤ I
OUT ≤ 300 mA
0.0013
%/mA
I
LIM_PWM
Switch Peak Current Limit
PWM Mode
1150
800
1500
mA
R
DSON(P)
P Channel FET on Resistance
V
IN = 3.6V
I
DS = 100 mA
310
m
R
DSON(N)
N Channel FET on Resistance
160
m
f
OSC
Internal Oscillator Frequency
PWM Mode
2
1.9
2.1
MHz
Efficiency
I
OUT = 5 mA, PFM Mode
V
OUT = 1.8V (Note 7)
88
%
I
OUT = 300 mA, PWM Mode
V
OUT = 1.8V (Note 7)
90
T
STUP
Start Up Time
I
OUT = 0 (Note 7), VOUT = 1.8V
140
s
11
www.national.com
LP3923
相關(guān)PDF資料
PDF描述
LP3923TLX-VB 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
LP3923TL-VB 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
LP3923TLX-VC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
LP3923TL-VI 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30
LP3946ILD 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
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