FAN5336 Datasheet, PDF (4/9 Pages) Fairchild Semiconductor – 1.5MHz Boost Regulator with 33V Integrated FET Switch

Electrical Characteristics
V_IN = 2.7 to 5.5V, V_SHDN = V_IN, and T_A = -40°C to +85°C. Typical values are at T_A = 25°C and V_IN = 3.6V unless
otherwise noted.
Parameter
Output Voltage Accuracy
Switch Current Limit
Load Current
Switch On-Resistance
Quiescent Current
OFF Mode Current
Shutdown Threshold
Shutdown Pin Bias Current
Feedback Voltage (V_REF)
Feedback Pin Bias Current
Feedback Voltage Line
Regulation⁽³⁾
Switching Frequency
Maximum Duty Cycle
Start-up Turn-on Time
Load Regulation
Switch Leakage Current
Conditions
Refer to the Test Circuit in Figure 3.
V_IN = 3.6V
V_IN = 3.2V
V_OUT = 21V ±5%, V_IN ≥ 3.0V
V_OUT = 21V ±5%, V_IN ≥ 3.2V,
T_ON < 0.4s, T_OFF > 3.6s
V_IN = 3.6V
No Switching, V_FB ≥ 1.27V
Switching
V_SHDN = 0V
Device ON
Device OFF
V_SHDN = 0V or V_SHDN = 5.5V
I_Load = 0mA, V_IN = 3.6V at 25°C
3.0V < V_IN < 5.5V, I_LOAD = 0mA
V_IN = 3.0V, I_OUT = 75mA
V_IN = 3.6V, 1mA < I_Load <100mA
No Switching, V_IN = 5.5V
Min.
-3
1.1
75
100
1.5
1.205
1.15
87
Typ.
1.5
0.4
0.7
6.5
0.1
1
1.230
1
0.4
1.50
93
3.0
0.2
Max. Units
+3
%
1.8
A
mA
3.0
0.5
10
1.255
10
1.5
1.85
5.0
1
Ω
mA
µA
V
nA
V
nA
%/V
MHz
%
ms
%
µA
Note:
3.The line regulation is calculated based on
Δ_-----V_{----O----U---T--}
ΔV_IN
×
------¹--------
V_OUT
.
Test Circuit
2.7V to 5.5V
V_IN
C_IN
10µF
1V
IN
L
6.8µH
SW ⁶
2
GND
P1
NC ⁵
BAT54
R1 160k
C_F
180pF
V_OUT
C_OUT
4.7µF
ON
OFF
3 _SHDN
FB ⁴
R2 ^10k
© 2004 Fairchild Semiconductor Corporation
FAN5336 Rev. 1.0.0
Figure 3. Test Circuit
4
www.fairchildsemi.com