ML4894ES MICRO-LINEAR [Micro Linear Corporation], ML4894ES Datasheet - Page 5

• Manufacturer Part Number: ML4894ES
• Description: Synchronous Buck Controller
• Manufacturer: MICRO-LINEAR [Micro Linear Corporation]

Figure 2. ON-Time vs. Input Voltage
25
20
15
10
OSCILLATOR
5
0
ONE SHOT
COMPARATOR
5
CURRENT
7.5
t ON
+
-
R
S
V IN (V)
TRANSCONDUCTANCE
10
Q
Q
AMPLIFIER
Figure 1. ML4894 Functional Block Diagram
12.5
V SR
SYNCHRONOUS
COMPARATOR
RECTIFIER
SHOOT-THRU
PROTECTION
15
+
-
R gm
2.5V
-
+
-7mV
N DRV
I SENSE
P DRV
Figure 3. Volt-seconds vs. Input Voltage
V FB
60
50
40
30
20
10
0
7
6
3
2
5
7.5
V IN
R SENSE
I L
L1
C OUT
V IN (V)
10
C IN
12.5
ML4894
V OUT
+
–
15
5