參數(shù)資料
型號(hào)： 935262697118
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述： 5 V FIXED POSITIVE LDO REGULATOR, 0.3 V DROPOUT, PDSO8
封裝： PLASTIC, SOT-96, SO-8
文件頁(yè)數(shù)： 21/23頁(yè)
文件大?。?/td> 137K
代理商： 935262697118
2000 Feb 18
7
Philips Semiconductors
Preliminary specication
Very low dropout voltage/quiescent current
5 V voltage regulator
TDA3664
TEST AND APPLICATION INFORMATION
handbook, halfpage
MDA960
VP
13
2, 4
REG(3)
C1(1)
1
F
C2(2)
TDA3664
Fig.4 Test circuit (SO4).
(1) C1 is optional (to minimize supply noise only).
(2) C2 = 10
F.
(3) VREG =5V.
handbook, halfpage
MDA961
ESR
(
)
C2 (
F)
102
10
1
101
110
102
stable region
(2)
(1)
Fig.5
Graph for selecting the value of the output
capacitor C2.
(1) Maximum ESR at 200
A ≤ IREG ≤ 100 mA.
(2) Minimum ESR only when IREG ≤ 200 A.
Noise
The output noise is determined by the value of the output
capacitor (see Table 1).
Table 1
Noise gures
Note
1. Measured at a bandwidth of 10 Hz to 100 kHz.
Stability
The regulator is stabilized with an external capacitor on the
output. The value of this capacitor can be selected using
the diagrams shown in Figs 5 and 6. The four examples on
the next page show the effects of the stabilization circuit
using different values for the output capacitor.
OUTPUT
CURRENT
IO (mA)
NOISE FIGURE (
V)(1)
CO =10 FCO =47 FCO = 100 F
0.5
550
320
300
50
650
400
handbook, halfpage
MDA962
ESR
(
)
IREG (mA)
103
102
10
22
1
101
110
103
102
stable region
Fig.6
ESR as a function of IREG for selecting the
value of the output capacitor.
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