TPS65040_07 Datasheet, PDF (48/74 Pages) Texas Instruments – CLOCK- AND POWER-MANAGEMENT IC FOR RF SYSTEM

TPS65040
SLVS708B – NOVEMBER 2006 – REVISED APRIL 2007
Normal Operation
Mode
VOUT x 0.8
VOUT
SCP Monitor
Mode
0.5msec(typ)
SCP Mode
8msec(typ)
Power Upfrom Normal Operation
Softstart Mode Mode
500usec(max)
0V
Normal Operation
Mode
SCP Monitor
Mode
(a) SCP Operation
SCP Mode
Power Up from
Softstart Mode
Normal Operation
Mode
SCP Monitor
Mode
VOUT x 0.8
0.5msec(typ)
8msec(typ)
100~350usec(typ) 0.5msec(typ)
VOUT
0V
(b) SCP Operation With Intermittent Operation
VOUT x 0.8
VOUT
1
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
SCP Mode
8msec(typ)
1
2
3
0V
1:SCP Monitor Mode
2:SCP Mode
3:Softstart Mode
(c) Image of SCP Operation With Intermittent Operation
Figure 75. Short Circuit Protection
LOW DROPOUT OUTPUT
Figure 76 shows the block diagram of V11_V28TX, V12_V28RX, V13_V28A and V15_V18A. Also Figure 77
shows the block diagram of VGGE1_V28, VGGE2_V28 and VGGE3_V28 which have different control signals.
48
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