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参数资料
| 型号： | LP3906SQXVPFP |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
| 封装： | 5 X 4 MM, 0.80 MM HEIGHT, LLP-24 |
| 文件页数： | 38/40页 |
| 文件大小： | 4197K |
| 代理商： | LP3906SQXVPFP |
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Low Drop Out Regulators, LDO1 and LDO2
Unless otherwise noted, V
IN = 3.6, CIN = 1.0 F, COUT = 0.47 F. 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, 40°C to +125°C. (Note
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IN
Operational Voltage Range
VINLDO1 and VINLDO2 PMOS
1.74
5.5
V
OUT Accuracy
Output Voltage Accuracy (Default V
OUT)
Load current = 1 mA
3
%
ΔV
OUT
Line Regulation
V
IN = (VOUT + 0.3V) to 5.0V,
(Note 12), Load Current = 1 mA
0.15
%/V
Load Regulation
V
IN = 3.6V,
Load Current = 1 mA to I
MAX
0.011
%/mA
I
SC
Short Circuit Current Limit
LDO1-2, V
OUT = 0V
500
mA
V
IN – VOUT
Dropout Voltage
Load Current = 50 mA
25
200
mV
PSRR
Power Supply Ripple Rejection
F = 10 kHz, Load Current = I
MAX
45
dB
θn
Supply Output Noise
10 Hz < F < 100 KHz
80
Vrms
I
Q (Note 11,
Quiescent Current “On”
I
OUT = 0 mA
40
A
Quiescent Current “On”
I
OUT = IMAX
60
A
Quiescent Current “Off”
EN is de-asserted(Note 16)
0.03
A
T
ON
Turn On Time
Start up from shut-down
300
s
C
OUT
Output Capacitor
Capacitance for stability
0°C
≤ T
J ≤ 125°C
0.33
0.47
F
40°C
≤ T
J ≤ 125°C
0.68
1.0
F
ESR
5
500
m
Buck Converters SW1, SW2
Unless otherwise noted, V
IN = 3.6, CIN = 10 F, COUT = 10 F, LOUT = 2.2 H ceramic. 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, 40°
C to +125°C. (Note 2, Note 7, Note 8, Note 9, Note 14)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OUT
Output Voltage Accuracy
Default V
OUT
3
+3
%
Line Regulation
2.7< V
IN < 5.5
I
O =10 mA
0.089
%/V
Load Regulation
100 mA < I
O < IMAX
0.0013
%/mA
Eff
Efficiency
Load Current = 250 mA
96
%
I
SHDN
Shutdown Supply Current
EN is de-asserted
0.01
A
f
OSC
Sync Mode Clock Frequency
Synchronized from 13 MHz system
clock
2.0
MHz
Internal Oscillator Frequency
2.0
MHz
I
PEAK
Peak Switching Current Limit
2.0
A
I
Q
(Note 14)
Quiescent Current “On”
No load PFM Mode
33
A
R
DSON (P)
Pin-Pin Resistance PFET
200
m
R
DSON (N)
Pin-Pin Resistance NFET
180
m
T
ON
Turn On Time
Start up from shut-down
500
s
C
IN
Input Capacitor
Capacitance for stability
10
F
C
O
Output Capacitor
Capacitance for stability
10
F
7
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LP3906
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|---|---|
| LP3906SQX-VPFP/NOPB | 功能描述:其他电源管理 RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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