Page 10

Enpirion Power Datasheet ES1021QI Power Sequencing Controller

July 2014

Altera Corporation

1.5V

2.5V

3.3V

+5V

C1

1µF

C2

0.01µF

0.1µF

0.01µF

0.068µF

C4

C5

C3

C7

0.047µF

C8

0.01µF

C6

0.01µF

C9

0.1µF

NC

NC

GND

RESET1

RESET2

GATE_D

GATE_C

GATE_B

GATE_A

ISL6123IR

UVLO_A

DLY_OFF_B

UVLO_C

UVLO_D

UVLO_B

DLY_OFF_C

DLY_OFF_D

DLY_ON_A

S1

DLY_ON_D

DLY_ON_C

DLY_ON_B

EN_2

EN_1

4.99k

1.47k

3.01k

R12

R5

EN1

EN2

R1

R2

R4

R6

7.68k

6.98k

8.45k

12

14

17

20

22

19

R9 DNP

R10

750

2

5

6

7

4

3

13

18

21

15

16

8

23

Q1

2

7

1

4

Q1

5

78

R9

10

R10

10 R13

10

R14

10

4

2

1

6

8

3

6

Q2

DLY_OFF_A

R3

R11

10

1

11

9

24

2.26k

FIGURE 7. ES1021QI SCHEMATIC

5

3

Q2

4.99k

D1

D2 DNP

RST

RST2

EP

25

10128

July 9, 2014

Rev A