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参数资料
| 型号： | TDA3608TH/N3C,512 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封装： | PLASTIC, HSOP-20 |
| 文件页数： | 4/22页 |
| 文件大小： | 122K |
| 代理商： | TDA3608TH/N3C,512 |
2003 Nov 28
12
Philips Semiconductors
Product specication
Multiple voltage regulators with switch
TDA3608Q; TDA3608TH
Notes
1. The minimum value is the minimum operating voltage, only if VP has exceeded 6.5 V.
2. The quiescent current is measured in the standby mode. Therefore, the enable inputs of regulator 1, regulator 3 and
the power switch are grounded and RL(REG2) = ∞.
3. The voltage of the regulator drops as a result of a VP drop.
4. The rise and fall time is measured with a 10 k
pull-up resistor and CL =50pF.
5. This is the threshold voltage for the delay time of the power switch. The voltage on the reset delay capacitor increases
only at low output voltage of the power switch (for example at short circuit). When the voltage on this capacitor
exceeds this threshold voltage, the power switch is set to the foldback mode. The power switch is also protected by
the temperature protection.
6. Delay time calculation:
a) Reset pulse delay:
The delay time is 47 ms for C = 47 nF.
b) Power switch delay:
The delay time is 23.5 ms for C = 47 nF.
7. The dropout voltage of regulator 1, regulator 2 and regulator 3 is measured between pin VP and pins REG1, REG2
or REG3 respectively.
8. During current limit, current Im is held constant.
9. The foldback current protection limits the dissipated power at short-circuit.
Iq
quiescent current
IREG3 = 400 mA
15
40
mA
SVRR
supply voltage ripple
rejection
fi = 3 kHz; Vi = 2 V (p-p)
60
70
dB
Vdrop
dropout voltage
VP = 5.75 V; IREG3 = 400 mA;
note 7
1
1.5
V
Im
current limit
VREG3 > 4.5 V; see Fig.10;
note 8
0.45
0.70
A
Isc
short-circuit current
RL ≤ 0.5 ; see Fig.10; note 9
100
400
mA
Power switch
Vdrop
dropout voltage
ISW = 1 A; note 12
0.45
0.7
V
ISW = 1.8 A; note 12
1.0
1.8
V
Vcl
clamping voltage
VP ≥ 18 V
15
16.2
17.2
V
Vfb
yback voltage
behaviour
ISW = 100 mA
VP + 3
22
V
Idc
continuous current
VP =16V; VSW = 13.5 V
1.8
2.0
A
IM
peak current
VP = 17 V; see Fig.11; note 13
2
A
Isc
short-circuit current
VP = 14.4 V; VSW < 3.5 V;
see Fig.11; note 14
0.5
A
Backup switch
Idc
continuous current
0.3
0.35
A
Vcl
clamping voltage
VP ≥ 16.7 V
16
V
Ir
reverse current
VP = 0; VBU = 12.4 V; note 15
900
mA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
t
d(res)
C
I
ch
------
V
C(th1)
×
C
1000
10
3
×
==
[sec]
t
d(sw)
C
I
ch
------
V
C(th2)
×
C
500
×
10
3
×
[sec]
==
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