SMM151_10 SUMMIT [Summit Microelectronics, Inc.], SMM151_10 Datasheet - Page 14

• Manufacturer Part Number: SMM151_10
• Description: Single-channel Voltage/Current Monitors and Voltage Marginers
• Manufacturer: SUMMIT [Summit Microelectronics, Inc.]

Figure 6 – Typical application schematic shows the SMM151 controlling a 12V in/1.5V out DC/DC converter.
This example, using the 1.25V VREF, also shows the COMP1/2 pins monitoring the DC/DC converter VOUT set to an
OV of 1.7V on COMP1 and a UV of 1.3V on COMP2, the voltage divider resistors are: For OV, R1 = 1.37k, 1% R3 =
3.83k, 1%, For UV, R2 = 1.02k, 1% R4 = 25.5k, 1%. The Programming Supply jumper can be used to supply the
SMM151 VDD voltage from the SMX3202 programmer when the device is programmed with board power off and the
controlled supply unloaded.
Summit Microelectronics, Inc
APPLICATIONS INFORMATION (CONTINUED)
VDD
Programming Supply
DIODE
D1
1
3
5
7
9
Gnd
Gnd3
Rsrv5
+10V
+5V
J1
I2C
Rsrv10
Rsrv8
SDA
SCL
MR
2
4
6
8
10
VDD
+VIN 2.7V- 5.5V
MDN
MUP
C1
0.01uF
0.1uF
C2
VDD
C3
10uF
U1
25
24
28
1
6
4
2
8
7
3
MDN
MUP
SCL
SDA
A0
A1
A2
WP#
Gnd
9
VDD
22
NC
27
NC
0.47uF
NC
C4
NC
SMM151
2131 3.0 1/20/2010
READY
CAPM+
Comp1
Comp2
CAPM-
VREF
C5
1uF
VM+
Trim
VM-
FAULT#
19
12
14
15
20
26
10
13
14
C6
0.22uF
C7
0.1uF
C8
0.01uF
C10
0.1uF
R1
R3
12VIN
R6
0.01, 1%
0.01uF
C11
R2
R4
11
7
8
9
R5
+Vin
+Vin
Enable
+Vin
U2
2.5k
DC-DC SIE
C9
0.01uF
+Sense
-Sense
+Vout
-Vout
SMM151/152
1
2
4
3
C12
C Load
R7
R Load
VOUT = 1.5V